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Sample records for achieve higher power

  1. Korean Experience and Achievement in Higher Education

    ERIC Educational Resources Information Center

    Lee, Jeong-Kyu

    2001-01-01

    The purpose of this paper is to introduce the transition of Korean education reform and to weigh Korean experience and achievement in contemporary higher education. The paper first of all illustrates a historical perspective on higher education in light of educational reform. Secondly, this study reviews the achievements of Korean higher education…

  2. Using Records of Achievement in Higher Education.

    ERIC Educational Resources Information Center

    Assiter, Alison, Ed.; Shaw, Eileen, Ed.

    This collection of 22 essays examines the use of records of achievement (student profiles or portfolios) in higher and vocational education in the United Kingdom. They include: (1) "Records of Achievement: Background, Definitions, and Uses" (Alison Assiter and Eileen Shaw); (2) "Profiling in Higher Education" (Alison Assiter and Angela Fenwick);…

  3. Higher Education Is Key To Achieving MDGs

    ERIC Educational Resources Information Center

    Association of Universities and Colleges of Canada, 2004

    2004-01-01

    Imagine trying to achieve the Millennium Development Goals (MGDs) without higher education. As key institutions of civil society, universities are uniquely positioned between the communities they serve and the governments they advise. Through the CIDA-funded University Partnerships in Cooperation and Development program, Canadian universities have…

  4. Higher Education Counts: Achieving Results. 2007 Report

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2007

    2007-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's state system of higher education, as required under Connecticut General Statutes Section 10a-6a. The report contains accountability measures developed through the Performance Measures Task Force and approved by the Board of Governors for Higher Education. The measures…

  5. Higher Education Counts: Achieving Results. 2009 Report

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2009

    2009-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's state system of higher education, as required under Connecticut General Statutes Section 10a-6a. The report contains accountability measures developed through the Performance Measures Task Force and approved by the Board of Governors for Higher Education. The measures…

  6. Higher Education Counts: Achieving Results. 2006 Report

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2006

    2006-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's state system of higher education, as required under Connecticut General Statutes Section 10a-6a. The report contains accountability measures developed through the Performance Measures Task Force and approved by the Board of Governors for Higher Education. The measures…

  7. Higher Education Counts: Achieving Results. 2008 Report

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2008

    2008-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's state system of higher education, as required under Connecticut General Statutes Section 10a-6a. The report contains accountability measures developed through the Performance Measures Task Force and approved by the Board of Governors for Higher Education. The measures…

  8. Higher Education Counts: Achieving Results, 2011. Report

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2011

    2011-01-01

    This report, issued by the Connecticut Department of Higher Education, reports on trends in higher education for the year 2011. Six goals are presented, each with at least two indicators. Each indicator is broken down into the following subsections: About This Indicator; Highlights; and In the Future. Most indicators also include statistical…

  9. Achieving Quality Learning in Higher Education.

    ERIC Educational Resources Information Center

    Nightingale, Peggy; O'Neil, Mike

    This volume on quality learning in higher education discusses issues of good practice particularly action learning and Total Quality Management (TQM)-type strategies and illustrates them with seven case studies in Australia and the United Kingdom. Chapter 1 discusses issues and problems in defining quality in higher education. Chapter 2 looks at…

  10. Achieving Higher Energies via Passively Driven X-band Structures

    NASA Astrophysics Data System (ADS)

    Sipahi, Taylan; Sipahi, Nihan; Milton, Stephen; Biedron, Sandra

    2014-03-01

    Due to their higher intrinsic shunt impedance X-band accelerating structures significant gradients with relatively modest input powers, and this can lead to more compact particle accelerators. At the Colorado State University Accelerator Laboratory (CSUAL) we would like to adapt this technology to our 1.3 GHz L-band accelerator system using a passively driven 11.7 GHz traveling wave X-band configuration that capitalizes on the high shunt impedances achievable in X-band accelerating structures in order to increase our overall beam energy in a manner that does not require investment in an expensive, custom, high-power X-band klystron system. Here we provide the design details of the X-band structures that will allow us to achieve our goal of reaching the maximum practical net potential across the X-band accelerating structure while driven solely by the beam from the L-band system.

  11. Higher Education Counts: Achieving Results, 2008. Executive Summary

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2008

    2008-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's system of higher education. Since 2000, the report has been the primary vehicle for reporting higher education's progress toward achieving six, statutorily-defined state goals: (1) To enhance student learning and promote academic excellence; (2) To join with elementary…

  12. Higher Education Counts: Achieving Results. 2006 Executive Summary

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2006

    2006-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's system of higher education. Since 2000, the report has been the principle vehicle for reporting higher education's progress toward achieving six, statutorily-defined state goals: (1) To enhance student learning and promote academic excellence; (2) To join with…

  13. Higher Education Counts: Achieving Results. 2009 Executive Summary

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2009

    2009-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's system of higher education. Since 2000, the report has been the primary vehicle for reporting higher education's progress toward achieving six, statutorily-defined state goals: (1) To enhance student learning and promote academic excellence; (2) To join with elementary…

  14. Higher Education Counts: Achieving Results. 2007 Executive Summary

    ERIC Educational Resources Information Center

    Connecticut Department of Higher Education (NJ1), 2007

    2007-01-01

    "Higher Education Counts" is the annual accountability report on Connecticut's system of higher education. Since 2000, the report has been the primary vehicle for reporting higher education's progress toward achieving six, statutorily-defined state goals: (1) To enhance student learning and promote academic excellence; (2) To join with elementary…

  15. Achieving Equity in Higher Education: The Unfinished Agenda

    ERIC Educational Resources Information Center

    Astin, Alexander W.; Astin, Helen S.

    2015-01-01

    In this retrospective account of their scholarly work over the past 45 years, Alexander and Helen Astin show how the struggle to achieve greater equity in American higher education is intimately connected to issues of character development, leadership, civic responsibility, and spirituality. While shedding some light on a variety of questions…

  16. Drug Addiction, Love, and the Higher Power

    PubMed Central

    Sussman, Steve; Reynaud, Michel; Aubin, Henri-Jean; Leventhal, Adam M.

    2011-01-01

    This discussion piece suggests that reliance on a Higher Power in drug abuse recovery programs is entertained among some addicts for its psychobiological effects. Prayer, meditation, early romantic love, and drug abuse may have in common activation of mesolimbic dopaminergic pathways of the brain and the generation of intense emotional states. In this sense, reliance on a Higher Power may operate as a substitute addiction, which replaces the psychobiological functions formerly served by drug use. Implications of this perspective are discussed. PMID:21411471

  17. Elementary School Counselors and Teachers: Collaborators for Higher Student Achievement

    ERIC Educational Resources Information Center

    Sink, Christopher A.

    2008-01-01

    In this article I contend that elementary school teachers need to work more closely with school counselors to enhance student learning and academic performance and to narrow the achievement gap among student groups. Research showing the influence that counselors can exert on the educational process is summarized. Using the American School…

  18. Charting the course for nurses' achievement of higher education levels.

    PubMed

    Kovner, Christine T; Brewer, Carol; Katigbak, Carina; Djukic, Maja; Fatehi, Farida

    2012-01-01

    To improve patient outcomes and meet the challenges of the U.S. health care system, the Institute of Medicine recommends higher educational attainment for the nursing workforce. Characteristics of registered nurses (RNs) who pursue additional education are poorly understood, and this information is critical to planning long-term strategies for U.S. nursing education. To identify factors predicting enrollment and completion of an additional degree among those with an associate or bachelor's as their pre-RN licensure degree, we performed logistic regression analysis on data from an ongoing nationally representative panel study following the career trajectories of newly licensed RNs. For associate degree RNs, predictors of obtaining a bachelor's degree are the following: being Black, living in a rural area, nonnursing work experience, higher positive affectivity, higher work motivation, working in the intensive care unit, and working the day shift. For bachelor's RNs, predictors of completing a master's degree are the following: being Black, nonnursing work experience, holding more than one job, working the day shift, working voluntary overtime, lower intent to stay at current employer, and higher work motivation. Mobilizing the nurse workforce toward higher education requires integrated efforts from policy makers, philanthropists, employers, and educators to mitigate the barriers to continuing education. PMID:23158196

  19. Strategies for Increasing Academic Achievement in Higher Education

    ERIC Educational Resources Information Center

    Ensign, Julene; Woods, Amelia Mays

    2014-01-01

    Higher education today faces unique challenges. Decreasing student engagement, increasing diversity, and limited resources all contribute to the issues being faced by students, educators, and administrators alike. The unique characteristics and expectations that students bring to their professional programs require new methods of addressing…

  20. Achievable flatness in a large microwave power antenna study

    NASA Technical Reports Server (NTRS)

    1978-01-01

    Achievable flatness for the microwave power transmission system antenna array was determined. Two configurations were analyzed in detail and evaluated as to their net potential misalignment. Manufacturing, joint slack, assembly, alignment and environmental aspects were considered. Approaches to each aspect were analyzed to minimize their contributions to distortions.

  1. Stable same-sex friendships with higher achieving partners promote mathematical reasoning in lower achieving primary school children.

    PubMed

    DeLay, Dawn; Laursen, Brett; Kiuru, Noona; Poikkeus, Anna-Maija; Aunola, Kaisa; Nurmi, Jari-Erik

    2015-11-01

    This study was designed to investigate friend influence over mathematical reasoning in a sample of 374 children in 187 same-sex friend dyads (184 girls in 92 friendships; 190 boys in 95 friendships). Participants completed surveys that measured mathematical reasoning in the 3rd grade (approximately 9 years old) and 1 year later in the 4th grade (approximately 10 years old). Analyses designed for dyadic data (i.e., longitudinal actor-partner interdependence model) indicated that higher achieving friends influenced the mathematical reasoning of lower achieving friends, but not the reverse. Specifically, greater initial levels of mathematical reasoning among higher achieving partners in the 3rd grade predicted greater increases in mathematical reasoning from 3rd grade to 4th grade among lower achieving partners. These effects held after controlling for peer acceptance and rejection, task avoidance, interest in mathematics, maternal support for homework, parental education, length of the friendship, and friendship group norms on mathematical reasoning. PMID:26402901

  2. Validity of Assessment and Recognition of Non-Formal and Informal Learning Achievements in Higher Education

    ERIC Educational Resources Information Center

    Kaminskiene, Lina; Stasiunaitiene, Egle

    2013-01-01

    The article identifies the validity of assessment of non-formal and informal learning achievements (NILA) as one of the key factors for encouraging further development of the process of assessing and recognising non-formal and informal learning achievements in higher education. The authors analyse why the recognition of non-formal and informal…

  3. Latina/o Student Achievement: A Collaborative Mission of Professional Associations of Higher Education

    ERIC Educational Resources Information Center

    Arredondo, Patricia; Castillo, Linda G.

    2011-01-01

    Latina/o student achievement is a priority for the American Association of Hispanics in Higher Education (AAHHE). To date, AAHHE has worked deliberately on this agenda. However, well-established higher education associations such as the Association of American Universities (AAU) and the Association of Public and Land-grant Universities (APLU) are…

  4. Relationship between Study Habits and Academic Achievement of Higher Secondary School Students

    ERIC Educational Resources Information Center

    Lawrence, A. S. Arul

    2014-01-01

    The present study was probed to find the significant relationship between study habits and academic achievement of higher secondary school students with reference to the background variables. Survey method was employed. Data for the study were collected from 300 students in 13 higher secondary schools using Study Habits Inventory by V.G. Anantha…

  5. Colonialism on Campus: A Critique of Mentoring to Achieve Equity in Higher Education.

    ERIC Educational Resources Information Center

    Collins, Roger L.

    In order to reconceptualize the mentoring relationship in higher education, parallels to colonialist strategies of subordination are drawn. The objective is to stimulate renewed thinking and action more consistent with stated policy goals in higher education. One of the primary functions of a mentor or sponsor is to exercise personal power to…

  6. Technology's Effect on Achievement in Higher Education: A Stage I Meta-Analysis of Classroom Applications

    ERIC Educational Resources Information Center

    Schmid, Richard F.; Bernard, Robert M.; Borokhovski, Eugene; Tamim, Rana; Abrami, Philip C.; Wade, C. Anne; Surkes, Michael A.; Lowerison, Gretchen

    2009-01-01

    This paper reports the findings of a Stage I meta-analysis exploring the achievement effects of computer-based technology use in higher education classrooms (non-distance education). An extensive literature search revealed more than 6,000 potentially relevant primary empirical studies. Analysis of a representative sample of 231 studies (k = 310)…

  7. Leveraging Quality Improvement to Achieve Student Learning Assessment Success in Higher Education

    ERIC Educational Resources Information Center

    Glenn, Nancy Gentry

    2009-01-01

    Mounting pressure for transformational change in higher education driven by technology, globalization, competition, funding shortages, and increased emphasis on accountability necessitates that universities implement reforms to demonstrate responsiveness to all stakeholders and to provide evidence of student achievement. In the face of the demand…

  8. An Exploratory Study of the Achievement of the Twenty-First Century Skills in Higher Education

    ERIC Educational Resources Information Center

    Ghaith, Ghazi

    2010-01-01

    Purpose: The purpose of this paper is to present the results of a survey study of the achievement of twenty-first century skills in higher education. Design/methodology/approach: The study employs a quantitative survey design. Findings: The findings indicate that the basic scientific and technological skills of reading critically and writing…

  9. Achieving Higher Levels of Success for A.D.H.D. Students Working in Collaborative Groups

    ERIC Educational Resources Information Center

    Simplicio, Joseph S. C.

    2007-01-01

    This article explores a new and innovative strategy for helping students with Attention Deficit Hyperactivity Disorder (A.D.H.D.) achieve higher levels of academic success when working in collaborative groups. Since the research indicates that students with this disorder often have difficulty in maintaining their concentration this strategy is…

  10. The Effects of Learning Strategies on Mathematical Literacy: A Comparison between Lower and Higher Achieving Countries

    ERIC Educational Resources Information Center

    Magen-Nagar, Noga

    2016-01-01

    The purpose of the current study is to explore the effects of learning strategies on Mathematical Literacy (ML) of students in higher and lower achieving countries. To address this issue, the study utilizes PISA2002 data to conduct a multi-level analysis (HLM) of Hong Kong and Israel students. In PISA2002, Israel was rated 31st in Mathematics,…

  11. An Analysis of Factors Influencing the Achievement of Higher Education by Chief Fire Officers

    ERIC Educational Resources Information Center

    Ditch, Robert L.

    2012-01-01

    The leadership of the United States Fire Service (FS) believes that higher education increases the professionalism of FS members. The research problem at the research site, which is a multisite fire department located in southeastern United States, was the lack of research-based findings on the factors influencing the achievement of higher…

  12. Peer Mentoring in Higher Education: Issues of Power and Control

    ERIC Educational Resources Information Center

    Christie, Hazel

    2014-01-01

    In response to widespread support for mentoring schemes in higher education this article calls for a more critical investigation of the dynamics of power and control, which are intrinsic to the mentoring process, and questions presumptions that mentoring brings only positive benefits to its participants. It provides this more critical appraisal by…

  13. The Higher Power of Patron: Profile of Newbery Winner

    ERIC Educational Resources Information Center

    Oleck, Joan

    2007-01-01

    One lousy starred review. That was all, initially, that Susan Patron had to show for the 10 years she spent writing "The Higher Power of Lucky," her funny, tender story of a little girl struggling to gain control over her life. One star, from "Kirkus Reviews," for the heart and soul Patron poured into her second novel. Positive notices had…

  14. Powering Down: Green IT in Higher Education. Key Findings

    ERIC Educational Resources Information Center

    Sheehan, Mark C.

    2010-01-01

    This document presents the key findings from "Powering Down: Green IT in Higher Education," the 2010 ECAR (EDUCAUSE Center for Applied Research) study of green IT. The study examines the stance institutions and their central IT organizations are taking on environmental sustainability (ES), the progress they are making on a variety of key…

  15. MS Power Point vs Prezi in Higher Education

    ERIC Educational Resources Information Center

    Kiss, Gabor

    2016-01-01

    The teachers use different presentation tools in Higher Education to make the presentation enjoyable for the students. I used MS Power Point or Prezi in my presentations in two different groups of the freshmen students at the University. The aim of this research was an analysis of the paper results in two groups of students to reveal the influence…

  16. Do Parents Make a Difference to Children's Academic Achievement? Differences between Parents of Higher and Lower Achieving Students

    ERIC Educational Resources Information Center

    Jacobs, Nicky; Harvey, David

    2005-01-01

    Differences in family factors in determining academic achievement were investigated by testing 432 parents in nine independent, coeducational Melbourne schools. Schools were ranked and categorized into three groups (high, medium and low), based on student achievement (ENTER) scores in their final year of secondary school and school improvement…

  17. Development of a higher power cooling system for lithium targets.

    PubMed

    Phoenix, B; Green, S; Scott, M C; Bennett, J R J; Edgecock, T R

    2015-12-01

    The accelerator based Boron Neutron Capture Therapy beam at the University of Birmingham is based around a solid thick lithium target cooled by heavy water. Significant upgrades to Birmingham's Dynamitron accelerator are planned prior to commencing a clinical trial. These upgrades will result in an increase in maximum achievable beam current to at least 3 mA. Various upgrades to the target cooling system to cope with this increased power have been investigated. Tests of a phase change coolant known as "binary ice" have been carried out using an induction heater to provide a comparable power input to the Dynamitron beam. The experimental data shows no improvement over chilled water in the submerged jet system, with both systems exhibiting the same heat input to target temperature relation for a given flow rate. The relationship between the cooling circuit pumping rate and the target temperature in the submerged jet system has also been tested. PMID:26254970

  18. Leveraging People-Related Maturity Issues for Achieving Higher Maturity and Capability Levels

    NASA Astrophysics Data System (ADS)

    Buglione, Luigi

    During the past 20 years Maturity Models (MM) become a buzzword in the ICT world. Since the initial Crosby's idea in 1979, plenty of models have been created in the Software & Systems Engineering domains, addressing various perspectives. By analyzing the content of the Process Reference Models (PRM) in many of them, it can be noticed that people-related issues have little weight in the appraisals of the capabilities of organizations while in practice they are considered as significant contributors in traditional process and organizational performance appraisals, as stressed instead in well-known Performance Management models such as MBQA, EFQM and BSC. This paper proposes some ways for leveraging people-related maturity issues merging HR practices from several types of maturity models into the organizational Business Process Model (BPM) in order to achieve higher organizational maturity and capability levels.

  19. Design and performance of tapered cubic anvil used for achieving higher pressure and larger sample cell.

    PubMed

    Han, Qi-Gang; Yang, Wen-Ke; Zhu, Pin-Wen; Ban, Qing-Chu; Yan, Ni; Zhang, Qiang

    2013-07-01

    In order to increase the maximum cell pressure of the cubic high pressure apparatus, we have developed a new structure of tungsten carbide cubic anvil (tapered cubic anvil), based on the principle of massive support and lateral support. Our results indicated that the tapered cubic anvil has some advantages. First, tapered cubic anvil can push the transfer rate of pressure well into the range above 36.37% compare to the conventional anvil. Second, the rate of failure crack decreases about 11.20% after the modification of the conventional anvil. Third, the limit of static high-pressure in the sample cell can be extended to 13 GPa, which can increase the maximum cell pressure about 73.3% than that of the conventional anvil. Fourth, the volume of sample cell compressed by tapered cubic anvils can be achieved to 14.13 mm(3) (3 mm diameter × 2 mm long), which is three and six orders of magnitude larger than that of double-stage apparatus and diamond anvil cell, respectively. This work represents a relatively simple method for achieving higher pressures and larger sample cell. PMID:23902079

  20. Pyramiding B genes in cotton achieves broader but not always higher resistance to bacterial blight.

    PubMed

    Essenberg, Margaret; Bayles, Melanie B; Pierce, Margaret L; Verhalen, Laval M

    2014-10-01

    Near-isogenic lines of upland cotton (Gossypium hirsutum) carrying single, race-specific genes B4, BIn, and b7 for resistance to bacterial blight were used to develop a pyramid of lines with all possible combinations of two and three genes to learn whether the pyramid could achieve broad and high resistance approaching that of L. A. Brinkerhoff's exceptional line Im216. Isogenic strains of Xanthomonas axonopodis pv. malvacearum carrying single avirulence (avr) genes were used to identify plants carrying specific resistance (B) genes. Under field conditions in north-central Oklahoma, pyramid lines exhibited broader resistance to individual races and, consequently, higher resistance to a race mixture. It was predicted that lines carrying two or three B genes would also exhibit higher resistance to race 1, which possesses many avr genes. Although some enhancements were observed, they did not approach the level of resistance of Im216. In a growth chamber, bacterial populations attained by race 1 in and on leaves of the pyramid lines decreased significantly with increasing number of B genes in only one of four experiments. The older lines, Im216 and AcHR, exhibited considerably lower bacterial populations than any of the one-, two-, or three-B-gene lines. A spreading collapse of spray-inoculated AcBIn and AcBInb7 leaves appears to be a defense response (conditioned by BIn) that is out of control. PMID:24655289

  1. Achieving quality excellence at the Diablo Canyon Nuclear Power Plant

    SciTech Connect

    Skidmore, S.M.; Taggart, D.A.

    1988-01-01

    Quality assurance methods at the Diablo Canyon plant were transformed from the then typical industry practices that often alienated professional and technical people, as well as craftsmen and their foremen, to a cooperative method that allowed plant personnel to work together as a team. It has created an attitude to do it right the first time. The roles of quality professionals were expanded to include teaching and coaching to facilitate enhanced communication between and within functional organizations. This included regular presentations to managers and line personnel in an informal group participative atmosphere. These presentations have become widely known at the plant as quality awareness tailboard sessions. These presentations are intended to increase personnel sensitivity to the subject of quality and quality management. Economic achievement of excellence in quality is essential to remain competitive in today's marketplace. The proactive team-oriented approach of quality assurance achieves the bottom line of high quality with concurrently enhanced productivity and cost-effectiveness.

  2. Muscle function in avian flight: achieving power and control

    PubMed Central

    Biewener, Andrew A.

    2011-01-01

    Flapping flight places strenuous requirements on the physiological performance of an animal. Bird flight muscles, particularly at smaller body sizes, generally contract at high frequencies and do substantial work in order to produce the aerodynamic power needed to support the animal's weight in the air and to overcome drag. This is in contrast to terrestrial locomotion, which offers mechanisms for minimizing energy losses associated with body movement combined with elastic energy savings to reduce the skeletal muscles' work requirements. Muscles also produce substantial power during swimming, but this is mainly to overcome body drag rather than to support the animal's weight. Here, I review the function and architecture of key flight muscles related to how these muscles contribute to producing the power required for flapping flight, how the muscles are recruited to control wing motion and how they are used in manoeuvring. An emergent property of the primary flight muscles, consistent with their need to produce considerable work by moving the wings through large excursions during each wing stroke, is that the pectoralis and supracoracoideus muscles shorten over a large fraction of their resting fibre length (33–42%). Both muscles are activated while being lengthened or undergoing nearly isometric force development, enhancing the work they perform during subsequent shortening. Two smaller muscles, the triceps and biceps, operate over a smaller range of contractile strains (12–23%), reflecting their role in controlling wing shape through elbow flexion and extension. Remarkably, pigeons adjust their wing stroke plane mainly via changes in whole-body pitch during take-off and landing, relative to level flight, allowing their wing muscles to operate with little change in activation timing, strain magnitude and pattern. PMID:21502121

  3. Effects of Traditional, Blended and E-Learning on Students' Achievement in Higher Education

    ERIC Educational Resources Information Center

    Al-Qahtani, Awadh A. Y.; Higgins, S. E.

    2013-01-01

    The study investigates the effect of e-learning, blended learning and classroom learning on students' achievement. Two experimental groups together with a control group from Umm Al-Qura University in Saudi Arabia were identified randomly. To assess students' achievement in the different groups, pre- and post-achievement tests were used. The…

  4. Inclusion and Achievement: Student Achievement in Secondary Schools with Higher and Lower Proportions of Pupils Designated as Having Special Educational Needs

    ERIC Educational Resources Information Center

    Rouse, Martyn; Florian, Lani

    2006-01-01

    This paper reports on a multi-method study that examined the effects of including higher and lower proportions of students designated as having special educational needs on student achievement in secondary schools. It explores some of the issues involved in conducting such research and considers the extent to which newly available national data in…

  5. Teacher Quality and Educational Equality: Do Teachers with Higher Standards-Based Evaluation Ratings Close Student Achievement Gaps?

    ERIC Educational Resources Information Center

    Borman, Geoffrey D.; Kimball, Steven M.

    2005-01-01

    Using standards-based evaluation ratings for nearly 400 teachers, and achievement results for over 7,000 students from grades 4-6, this study investigated the distribution and achievement effects of teacher quality in Washoe County, a mid-sized school district serving Reno and Sparks, Nevada. Classrooms with higher concentrations of minority,…

  6. What Is the Best Way to Achieve Broader Reach of Improved Practices in Higher Education?

    ERIC Educational Resources Information Center

    Kezar, Adrianna

    2011-01-01

    This article examines a common problem in higher education--how to create more widespread use of improved practices, often commonly referred to as innovations. I argue that policy models of scale-up are often advocated in higher education but that they have a dubious history in community development and K-12 education and that higher education…

  7. Axicons for mode conversion in high peak power, higher-order mode, fiber amplifiers.

    PubMed

    Nicholson, J W; DeSantolo, A; Westbrook, P S; Windeler, R S; Kremp, T; Headley, C; DiGiovanni, D J

    2015-12-28

    Higher-order mode fiber amplifiers have demonstrated effective areas as large as 6000 μm2, allowing for high pulse energy and peak power amplification. Long-period gratings are used to convert the fundamental mode to the higher-order mode at the entrance to the amplifier, and reconvert back to the fundamental at the exit, to achieve a diffraction limited beam. However, long period gratings are susceptible to nonlinearity at high peak power. In this work, we propose and demonstrate axicons for linear bulk-optic mode conversion at the output of higher order mode amplifiers. We achieve an M2 of less than 1.25 for 80% mode conversion efficiency. Experiments with pulsed amplifiers confirm that the mode conversion is free from nonlinearity. Furthermore, chirp pulse amplifier experiments confirm that HOM amplifiers plus axicon mode convertors provide energy scalability in femtosecond pulses, compared to smaller effective area, fundamental mode fiber amplifiers. We also propose and demonstrate a route towards fiber integration of the axicon mode convertor by fabricating axicons directly on the tip of the fiber amplifier end-cap. PMID:26832045

  8. Beyond Virtual Equality: Liberatory Consciousness as a Path to Achieve Trans* Inclusion in Higher Education

    ERIC Educational Resources Information Center

    Catalano, D. Chase J.

    2015-01-01

    Trans* men have not, as yet, received specific research attention in higher education. Based on intensive interviews with 25 trans* men enrolled in colleges or universities in New England, I explore their experiences in higher education. I analyze participants' descriptions of supports and challenges in their collegiate environments, as well as…

  9. Using the Internet To Deliver Higher Education: A Cautionary Tale about Achieving Good Practice.

    ERIC Educational Resources Information Center

    Coombs, Steven J.; Rodd, Jillian

    2001-01-01

    Reviews the development and delivery of a higher education course module that was designed to provide remote learners in England with computer-supported solutions to access higher education as part of a technology-assisted distance education program. Highlights include use of a Web site; e-mail; videoconferencing; and student attrition rate.…

  10. Higher Education and the Achievement (and/or Prevention) of Equity and Social Justice

    ERIC Educational Resources Information Center

    Brennan, John; Naidoo, Rajani

    2008-01-01

    The article examines the theoretical and empirical literature on higher education's role in relation to social equity and related notions of citizenship, social justice, social cohesion and meritocracy. It considers both the education and the research functions of higher education and how these impact upon different sections of society, on who…

  11. Using Regional Cooperation and Technology To Achieve Cost Savings: The Midwestern Higher Education Commission.

    ERIC Educational Resources Information Center

    Murphy, David; Williams, Jeff

    1997-01-01

    Describes four successful cost-containment initiatives of the Midwestern Higher Education Commission, which was established to advance higher education in the Midwest through interstate cooperation. Projects include development of Academic Scheduling and Management Software; Internet-based activities; the Virtual Private Network, to reduce…

  12. The Effects of Higher Education/Military Service on Achievement Levels of Police Academy Cadets.

    ERIC Educational Resources Information Center

    Johnson, Thomas Allen

    This study compared levels of achievement of three groups of Houston (Texas) police academy cadets: those with no military service but with 60 or more college credit hours, those with military service and 0 hours of college credit, and those with military service and 1 to 59 hours of college credit. Prior to 1991, police cadets in Houston were…

  13. Postponement in the Completion of the Final Dissertation: An Underexplored Dimension of Achievement in Higher Education

    ERIC Educational Resources Information Center

    Dupont, Serge; Meert, Gaëlle; Galand, Benoît; Nils, Frédéric

    2013-01-01

    Research on academic achievement at a university has mainly focused on success and persistence among first year students. Very few studies have looked at delay or failure in the completion of a final dissertation. However, this phenomenon could affect a substantial proportion of students and has considerable costs. The purpose of the present study…

  14. Gender Segregation in Higher Education: Effects of Aspirations, Mathematics Achievement, and Income.

    ERIC Educational Resources Information Center

    Wilson, Kenneth L; Boldizar, Janet P.

    1990-01-01

    Analyzes the relationships among mathematics achievement levels, income potential, high school aspirations, and the gender segregation of bachelor's degrees. Investigates how gender segregation changed between 1973 and 1983. Concludes that gender segregation is present at the high school and bachelor's levels. Maintains that psychological barriers…

  15. The Relationship between Epistemological Beliefs, Learning Strategies and Achievement in Higher Education

    ERIC Educational Resources Information Center

    Mc Beth, Maureen

    2010-01-01

    This study provides important insights into the relationship between the epistemological beliefs of community college students, the selection of learning strategies, and academic achievement. This study employed a quantitative survey design. Data were collected by surveying students at a community college during the spring semester of 2010. The…

  16. Success in Higher Education: The Challenge to Achieve Academic Standing and Social Position

    ERIC Educational Resources Information Center

    Life, James

    2015-01-01

    When students look at their classmates in the classroom, consciously or unconsciously, they see competitors both for academic recognition and social success. How do they fit in relation to others and how do they succeed in achieving both? Traditional views on the drive to succeed and the fear of failure are well known as motivators for achieving…

  17. Correlation of Conditional Admittance and Student Achievement in an Undergraduate Higher Education Setting

    ERIC Educational Resources Information Center

    Parisi, Joe

    2012-01-01

    This paper explores several research questions that identify differences between conditionally admitted students and regularly admitted students in terms of achievement results at one institution. The research provides specific variables as well as relationships including historical and comparative aggregate data from 2009 and 2010 that indicate…

  18. The Little District that Could: Literacy Reform Leads to Higher Achievement in California District

    ERIC Educational Resources Information Center

    Kelly, Patricia R.; Budicin-Senters, Antoinette; King, L. McLean

    2005-01-01

    This article describes educational reform developed over a 10-year period in California's Lemon Grove School District, which resulted in a steady and remarkable upward shift in achievement for the students of this multicultural district just outside San Diego. Six elements of literacy reform emerged as the most significant factors affecting…

  19. Important Learning Dimensions Influencing Undergraduate Students' Learning and Academic Achievement in Higher Education

    ERIC Educational Resources Information Center

    Usun, Salih

    2004-01-01

    The main aim of this study was to determine the opinions of the undergraduate students and faculty members on factors that affect student learning and academic achievement. The sub aims of this study were to: (1) Develop a mean rank ordering of the 23 dimensions affecting learning, for both the students and faculty, and determine the similarities…

  20. Gender Disparity Analysis in Academic Achievement at Higher Education Preparatory Schools: Case of South Wollo, Ethiopia

    ERIC Educational Resources Information Center

    Eshetu, Amogne Asfaw

    2015-01-01

    Gender is among the determinant factors affecting students' academic achievement. This paper tried to investigate the impact of gender on academic performance of preparatory secondary school students based on 2014 EHEECE result. Ex post facto research design was used. To that end, data were collected from 3243 students from eight purposively…

  1. Increasing Access to Higher Education among Low-Income Students: The Washington State Achievers Program

    ERIC Educational Resources Information Center

    Myers, Carrie B.; Brown, Doreen E.; Pavel, D. Michael

    2010-01-01

    The purpose of this study was to assess how a comprehensive precollege intervention and developmental program among low-income high school students contributed to college enrollment outcomes measured in 2006. Our focus was on the Fifth Cohort of the Washington State Achievers (WSA) Program, which provides financial, academic, and college…

  2. WISC-III and CAS: Which Correlates Higher with Achievement for a Clinical Sample?

    ERIC Educational Resources Information Center

    Naglieri, Jack A.; De Lauder, Brianna Y.; Goldstein, Sam; Schwebech, Adam

    2006-01-01

    The relationships between Wechsler Intelligence Scale for Children-Third Edition (WISC-III) and the Cognitive Assessment System (CAS) with the Woodcock-Johnson Tests of Achievement (WJ-III) were examined for a sample of 119 children (87 males and 32 females) ages 6 to 16. The sample was comprised of children who were referred to a specialty clinic…

  3. Value Change and Power Conflict in Higher Education.

    ERIC Educational Resources Information Center

    Minter, W. John, Ed.; Snyder, Patricia O., Ed.

    These papers deal with the relationship between basic changes in values taking place in society and campus power conflicts. Specifically, the papers address the following questions. What are the traditional and emerging value patterns which appear to be at the root of the power conflicts? What are the public's interests in these competing value…

  4. Editorially Speaking - Fusion Power: Reasons for Higher Priority

    ERIC Educational Resources Information Center

    Lippincott, William T.

    1973-01-01

    Discusses current research trends in the use of laser-fusion technology in combustion chambers to eradicate energy shortages. Indicates that fusion power could be made available at a relatively low expense. (CC)

  5. The Untapped Power of Music: Its Role in the Curriculum and Its Effect on Academic Achievement.

    ERIC Educational Resources Information Center

    Kestrom, Joyce M.

    1998-01-01

    To date, music has played a relatively minor role in U.S. schools. Current research has uncovered findings about the value of music study and its relationship to academic achievement. Music instruction is a powerful tool that educators can use to promote academic achievement and mental discipline. Music deserves a place alongside the core subjects…

  6. Demographic Inertia Revisited: An Immodest Proposal to Achieve Equitable Gender Representation among Faculty in Higher Education

    ERIC Educational Resources Information Center

    Marschke, Robyn; Laursen, Sandra; Nielsen, Joyce McCarl; Rankin, Patricia

    2007-01-01

    Progress toward equitable gender representation among faculty in higher education has been "glacial" since the early 1970s (Glazer-Raymo, 1999; Lomperis, 1990; Trower & Chait, 2002). Women, who now make up a majority of undergraduate degree earners and approximately 46% of Ph.D. earners nationwide (National Center for Education Statistics [NCES],…

  7. Achieving Canadian Excellence in and for the World: Leveraging Canada's Higher Education and Research

    ERIC Educational Resources Information Center

    Association of Universities and Colleges of Canada, 2004

    2004-01-01

    As Canada's opportunities to claim international leadership are assessed, the best prospects lie in a combination of our impressive higher education and research commitments, civic and institutional values, and quality of life. This paper concludes that as an exporting country, the benefits will come in economic growth. As citizens of the world,…

  8. Linking Emotional Intelligence to Achieve Technology Enhanced Learning in Higher Education

    ERIC Educational Resources Information Center

    Kruger, Janette; Blignaut, A. Seugnet

    2013-01-01

    Higher education institutions (HEIs) increasingly use technology-enhanced learning (TEL) environments (e.g. blended learning and e-learning) to improve student throughput and retention rates. As the demand for TEL courses increases, expectations rise for faculty to meet the challenge of using TEL effectively. The promises that TEL holds have not…

  9. Goals, Strategies, and Achievements in the Internationalization of Higher Education in Japan and Taiwan

    ERIC Educational Resources Information Center

    Ho, Hsuan-Fu; Lin, Ming-Huang; Yang, Cheng-Cheng

    2015-01-01

    International knowledge and skills are essential for success in today's highly competitive global marketplace. As one of the key providers of such knowledge and skills, universities have become a key focus of the internationalization strategies of governments throughout the world. While the internationalization of higher education clearly has…

  10. Moving to higher ground: Closing the high school science achievement gap

    NASA Astrophysics Data System (ADS)

    Mebane, Joyce Graham

    The purpose of this study was to examine the perceptions of West High School constituents (students, parents, teachers, administrators, and guidance counselors) about the readiness and interest of African American students at West High School to take Advanced Placement (AP) and International Baccalaureate (IB) science courses as a strategy for closing the achievement gap. This case study utilized individual interviews and questionnaires for data collection. The participants were selected biology students and their parents, teachers, administrators, and guidance counselors at West High School. The results of the study indicated that just over half the students and teachers, most parents, and all guidance counselors thought African American students were prepared to take AP science courses. Only one of the three administrators thought the students were prepared to take AP science courses. Between one-half and two-thirds of the students, parents, teachers, and administrators thought students were interested in taking an AP science course. Only two of the guidance counselors thought there was interest among the African American students in taking AP science courses. The general consensus among the constituents about the readiness and interest of African American students at West High School to take IB science courses was that it is too early in the process to really make definitive statements. West is a prospective IB school and the program is new and not yet in place. Educators at the West High School community must find reasons to expect each student to succeed. Lower expectations often translate into lower academic demands and less rigor in courses. Lower academic demands and less rigor in courses translate into less than adequate performance by students. When teachers and administrators maintain high expectations, they encourage students to aim high rather than slide by with mediocre effort (Lumsden, 1997). As a result of the study, the following suggestions should

  11. Accreditation Matters: Achieving Academic Recognition and Renewal. ASHE-ERIC Higher Education Report. Volume 30, Issue 4

    ERIC Educational Resources Information Center

    Alstete, Jeffrey W.

    2004-01-01

    This book focuses on contemporary accreditation, why it matters, and how it can be done effectively. The author covers historical background, getting started, strategies for achieving accreditation, and visions for future academic success, with examples and case studies. Accreditation is the primary way of ensuring the quality of higher education…

  12. Differences in General Cognitive Abilities and Domain-Specific Skills of Higher-and Lower-Achieving Students in Stoichiometry

    ERIC Educational Resources Information Center

    Gulacar, Ozcan; Eilks, Ingo; Bowman, Charles R.

    2014-01-01

    This paper reports a comparison of a group of higher-and lower-achieving undergraduate chemistry students, 17 in total, as separated on their ability in stoichiometry. This exploratory study of 17 students investigated parallels and differences in the students' general and domain-specific cognitive abilities. Performance, strategies, and…

  13. What Educational Initiatives Contribute to Higher than Expected Achievement in Student Performance for Public Schools in the State of Indiana?

    ERIC Educational Resources Information Center

    Keeley, Thomas Allen

    2010-01-01

    The purpose of this study was to determine whether the areas of teaching methods, teacher-student relationships, school structure, school-community partnerships or school leadership were significantly embedded in practice and acted as a change agent among school systems that achieve higher than expected results on their state standardized testing…

  14. Students' Commitment, Engagement and Locus of Control as Predictor of Academic Achievement at Higher Education Level

    ERIC Educational Resources Information Center

    Sarwar, Muhammad; Ashrafi, Ghulam Muhammad

    2014-01-01

    The purpose of this study was to analyze Students' Commitment, Engagement and Locus of Control as predictors of Academic Achievement at Higher Education Level. We used analytical model and conclusive research approach to conduct study and survey method for data collection. We selected 369 students using multistage sampling technique from…

  15. Parental Level of Education: Associations with Psychological Well-Being, Academic Achievement and Reasons for Pursuing Higher Education in Adolescence

    ERIC Educational Resources Information Center

    Schlechter, Melissa; Milevsky, Avidan

    2010-01-01

    The purpose of the current study is to determine the interconnection between parental level of education, psychological well-being, academic achievement and reasons for pursuing higher education in adolescents. Participants included 439 college freshmen from a mid-size state university in the northeastern USA. A survey, including indices of…

  16. The Rapid Transit System That Achieves Higher Performance with Lower Life-Cycle Costs

    NASA Astrophysics Data System (ADS)

    Sone, Satoru; Takagi, Ryo

    In the age of traction system made of inverter and ac traction motors, distributed traction system with pure electric brake of regenerative mode has been recognised very advantageous. This paper proposes a new system as the lowest life-cycle cost system for high performance rapid transit, a new architecture and optimum parameters of power feeding system, and a new running method of trains. In Japan, these components of this proposal, i.e. pure electric brake and various countermeasures of reducing loss of regeneration have been already popular but not as yet the new running method for better utilisation of the equipment and for lower life-cycle cost. One example of what are proposed in this paper will be made as Tsukuba Express, which is under construction as the most modern commuter railway in Greater Tokyo area.

  17. Knowledge and Power in Higher Education: A Reader.

    ERIC Educational Resources Information Center

    Brown, Richard Harvey, Ed.; Schubert, J. Daniel, Ed.

    This collection of essays is authored by social scientists who are concerned primarily with relationships between academic knowledge and political power, rethinking the traditional view of politics and science as mutually exclusive fields of study. Chapters are organized into three parts: "Introduction"; "The Institutional Politics of Knowledge…

  18. Achieving Higher Diagnostic Results in Stereotactic Brain Biopsy by Simple and Novel Technique

    PubMed Central

    Gulsen, Salih

    2015-01-01

    BACKGROUND: Neurosurgeons have preferred to perform the stereotactic biopsy for pathologic diagnosis when the intracranial pathology located eloquent areas and deep sites of the brain. AIM: To get a higher ratio of definite pathologic diagnosis during stereotactic biopsy and develop practical method. MATERIAL AND METHODS: We determined at least two different target points and two different trajectories to take brain biopsy during stereotactic biopsy. It is a different way from the conventional stereotactic biopsy method in which one point has been selected to take a biopsy. We separated our patients into two groups, group 1 (N=10), and group 2 (N= 19). We chose one target to take a biopsy in group 1, and two different targets and two different trajectories in group 2. In group 2, one patient underwent craniotomy due to hemorrhage at the site of the biopsy during tissue biting. However, none of the patients in both groups suffered any neurological complication related biopsy procedure. RESULTS: In group 1, two of 10 cases, and, in group 2, fourteen of 19 cases had positive biopsy harvesting. These results showed statistically significant difference between group 1 and group 2 (P<0.05). CONCLUSIONS: Regarding these results, choosing more than one trajectories and taking at least six specimens from each target provides higher diagnostic rate in stereotaxic biopsy taking method.

  19. Wind power stabilization to achieve proper grid connection using power convertor & DSP Controller

    NASA Astrophysics Data System (ADS)

    Shejal, B. D.; Jamge, S. B.

    2010-11-01

    The wind power sources are characterized by irregularity, instability and unpredictability. In normal operation, random properties of wind and blade rotational turbulence can produce unwanted fluctuation on the voltage and power supplied into the system. Power output of a wind turbine is a function of wind speed. Wind turbine is a source of power fluctuations due to the nature of wind speed. This fluctuating power will have its impact on power balance and voltage at the point of common coupling. Small variation of wind speed could cause a large variation in the extracted power. As a result, large voltage fluctuation may result in voltage variations outside the regulation limit at connection point. In this paper, a method has been developed to reduce output power fluctuations of a wind turbine with an energy storage system using stator side converter. The developed method has been tested through modeling a doubly fed wind turbine and a battery storage system, using SimPower Systems tools of MATLAB and simulated for operation as a grid connected system.

  20. Shifting Power Relations Between Higher Education and State Government.

    ERIC Educational Resources Information Center

    Nyquist, Ewald B.

    In the United States, decision-making in education is becoming laterally dispersed, involving the interaction of many more variables and many more people, groups, and agencies. It is also rising to higher levels of government, including the federal government. This is correlated with relatively new sources of financial support and with…

  1. Comparing Cattell-Horn-Carroll factor models: differences between bifactor and higher order factor models in predicting language achievement.

    PubMed

    Beaujean, A Alexander; Parkin, Jason; Parker, Sonia

    2014-09-01

    Previous research using the Cattell-Horn-Carroll (CHC) theory of cognitive abilities has shown a relationship between cognitive ability and academic achievement. Most of this research, however, has been done using the Woodcock-Johnson family of instruments with a higher order factor model. For CHC theory to grow, research should be done with other assessment instruments and tested with other factor models. This study examined the relationship between different factor models of CHC theory and the factors' relationships with language-based academic achievement (i.e., reading and writing). Using the co-norming sample for the Wechsler Intelligence Scale for Children--4th Edition and the Wechsler Individual Achievement Test--2nd Edition, we found that bifactor and higher order models of the subtests of the Wechsler Intelligence Scale for Children-4th Edition produced a different set of Stratum II factors, which, in turn, have very different relationships with the language achievement variables of the Wechsler Individual Achievement Test--2nd Edition. We conclude that the factor model used to represent CHC theory makes little difference when general intelligence is of major interest, but it makes a large difference when the Stratum II factors are of primary concern, especially when they are used to predict other variables. PMID:24840178

  2. Assessing achievement, affiliation, and power motives all at once: the Multi-Motive Grid (MMG).

    PubMed

    Sokolowski, K; Schmalt, H D; Langens, T A; Puca, R M

    2000-02-01

    In this article, we introduce the Multi-Motive Grid (MMG), a new diagnostic tool to measure motives with respect to their hope and fear components. The MMG combines features of the Thematic Apperception Test (TAT) with features of self-report questionnaires. Similar to the TAT, a set of 14 pictures representing a balanced set of achievement-arousing, affiliation-arousing, and power-arousing situations is presented together with a set of statements representing important motivational states. Six motive scores can be calculated: hope of success (HS) and fear of failure (FF) for the achievement motive, hope of affiliation (HA) and fear of rejection (FR) for the affiliation motive, and hope of power (HP) and fear of power (FP) for the power motive. Results of factor analyses suggest a 3-factor solution, with a general fear factor (FF, FR, FP), a factor combining the hope components of achievement and power (HS and HP), and a third factor representing HA, but the 6 a priori factors also reflect a sound structural model. Reliability data show that the internal consistency and retest reliability of the MMG scales satisfy traditional standards. External validity of the MMG has been established in all 3 motive domains. Three separate studies document that (a) individuals high in resultant achievement motivation perform better and report more flow experience, (b) individuals high in resultant power motivation profit more from a leadership training program, and (c) individuals high in resultant affiliation motivation recollect more highly memorable affiliative themes. PMID:10779937

  3. Achieving safety/risk goals for less ATR backup power upgrades

    SciTech Connect

    Atkinson, S.A.

    1995-10-01

    The Advanced Test Reactor probabilistic risk assessment for internal fire and flood events defined a relatively high risk for a total loss of electric power possibly leading to core damage. Backup power sources were disabled due to fire and flooding in the diesel generator area with propagation of the flooding to a common switchgear room. The ATR risk assessment was employed to define options for relocation of backup power system components to achieve needed risk reduction while minimizing costs. The risk evaluations were performed using sensitivity studies and importance measures. The risk-based evaluations of relocation options for backup power systems saved over $3 million from what might have been otherwise considered {open_quotes}necessary{close_quotes} for safety/risk improvement. The ATR experience shows that the advantages of a good risk assessment are to define risk significance, risk specifics, and risk solutions which enable risk goals to be achieved at the lowest cost.

  4. Relationships between Student Achievement and Use of Power Videos Digital Educational Videos

    ERIC Educational Resources Information Center

    Sorrells, Rick D.

    2009-01-01

    In classrooms with limited instructional time and many resources, teachers must decide which resources positively affect student achievement. Power Videos (PV), produced by DCS, is one such product used at the 373 elementary campuses in the greater Dallas, Texas, area. This research examined the relationship between teachers' usage of the DCS…

  5. Cognitive Holding Power, Fluid Intelligence, and Mathematical Achievement as Predictors of Children's Realistic Problem Solving

    ERIC Educational Resources Information Center

    Xin, Ziqiang; Zhang, Li

    2009-01-01

    The present study explored whether first and second order cognitive holding power perceived by children in mathematical classrooms, fluid intelligence, and mathematical achievement predicted their performance on standard problems, and especially realistic problems. A sample of 119 Chinese 4-6th graders were administered the word problem test, the…

  6. Achievement Motivation Revisited: New Longitudinal Data to Demonstrate Its Predictive Power

    ERIC Educational Resources Information Center

    Hustinx, Paul W. J.; Kuyper, Hans; van der Werf, Margaretha P. C.; Dijkstra, Pieternel

    2009-01-01

    During recent decades, the classical one-dimensional concept of achievement motivation has become less popular among motivation researchers. This study aims to revive the concept by demonstrating its predictive power using longitudinal data from two cohort samples, each with 20,000 Dutch secondary school students. Two measures of achievement…

  7. Potential of proposed open-cycle OTEC experiments to achieve net power

    SciTech Connect

    Link, H F; Parsons, B K

    1986-06-01

    Researchers at the Solar Energy Research Institute (SERI) conducted systems analysis studies to determine the potential of various experiments to produce net power using the Claude open-cycle ocean thermal energy conversion (OTEC) power system. The proposed experiment test site is to be the Natural Energy Laboratory of Hawaii at Keahole Point. We found that net power is unlikely to be produced in experiment sizes that use less than about 195 kg/s (3000 gpm) of cold water, and that flow rates of 420 kg/s (6500 gpm) are necessary to achieve a net-power production of at least one-half the gross-power output of the experiment.

  8. Superfluorescent fiber source achieving multisignal power equalization in distributed fiber Bragg grating sensing

    NASA Astrophysics Data System (ADS)

    Liu, Ying-Gang; Jia, Zhen-An; Qiao, Xue-Guang; Wang, Hong-Liang; Zhang, Wei; Xu, Shi-Chao

    2011-12-01

    In order to achieve multisignal power equalization in a quasidistributed fiber Bragg grating (FBG) sensing system, an erbium-doped fiber (EDF) superfluorescent source with high flatness and broadband spectrum is presented using a three-stage double-pump configuration. The spectral protrusions in the vicinity of 1532 and 1570 nm are flattened, which is achieved by designing a gain flattening filter with a long-period grating. The result shows that the flatness of the output spectrum covering the C and L band, from 1526.52 to 1607.87 nm, is less than 0.76 dBm. The 3 dB bandwidth is 75.68 nm, and the output power of 13.11 mW is achieved in the C and L band. By using the fiber amplified spontaneous emission (ASE) source in FBG sensing system for decreasing multisignals peak power variation, the standard deviation of multisignals peak power is decreased to 1.00 dBm. In a multiplexed FBG sensing system, the high flattening fiber ASE source is beneficial to long-distance transmission, amplification, recognition, and demodulation of FBG sensing signals.

  9. Nuclear power supplies: their potential and the practical problems to their achievement for space missions

    SciTech Connect

    Colston, B.W.; Brehm, R.L.

    1985-01-01

    The anticipated growth of the space station power requirement provides a good example of the problem the space nuclear power supply developers have to contend with: should a reactor power supply be developed that attempts to be all things to all missions, i.e., is highly flexible in its ability to meet a wide variety of missions, or should the development of a reactor system await a specific mission definition and be customized to this mission. This leads, of course, to a chicken-and-egg situation. For power requirements of several hundreds of kilowatts or more, no nuclear power source exists or is even far enough along in the definition stage (much less the development stage) for NASA to reasonably assume probable availability within the next 10 years. The real problem of space nuclear power is this ''chicken-and-egg'' syndrome: DOE will not develop a space reactor system for NASA without a firm mission, and NASA will not specify a firm mission requiring a space reactor because such a system doesn't exist and is perceived not to be developable within the time frame of the mission. The problem is how to break this cycle. The SP-100 program has taken an important first step to breaking this cycle, but this program is much more design-specific than what is required to achieve a broad technology base and latitude in achievable power level. In contrast to the SP-100 approach, a wider perspective is required: the development of the appropriate technologies for power levels can be broken into ranges, say, from 100 kWe to 1000 kWe, and from 1000 kWe to 10,000 kWe.

  10. Leadership and culture of data governance for the achievement of higher education goals (Case study: Indonesia University of Education)

    NASA Astrophysics Data System (ADS)

    Putro, Budi Laksono; Surendro, Kridanto; Herbert

    2016-02-01

    Data is a vital asset in a business enterprise in achieving organizational goals. Data and information affect the decision-making process on the various activities of an organization. Data problems include validity, quality, duplication, control over data, and the difficulty of data availability. Data Governance is the way the company / institution manages its data assets. Data Governance covers the rules, policies, procedures, roles and responsibilities, and performance indicators that direct the overall management of data assets. Studies on governance data or information aplenty recommend the importance of cultural factors in the governance of research data. Among the organization's leadership culture has a very close relationship, and there are two concepts turn, namely: Culture created by leaders, leaders created by culture. Based on the above, this study exposure to the theme "Leadership and Culture Of Data Governance For The Achievement Of Higher Education Goals (Case Study: Indonesia University Of Education)". Culture and Leadership Model Development of on Higher Education in Indonesia would be made by comparing several models of data governance, organizational culture, and organizational leadership on previous studies based on the advantages and disadvantages of each model to the existing organizational business. Results of data governance model development is shown in the organizational culture FPMIPA Indonesia University Of Education today is the cultural market and desired culture is a culture of clan. Organizational leadership today is Individualism Index (IDV) (83.72%), and situational leadership on selling position.

  11. Achieving EMC Emissions Compliance for an Aeronautics Power Line Communications System

    NASA Astrophysics Data System (ADS)

    Dominiak, S.; Vos, G.; ter Meer, T.; Widmer, H.

    2012-05-01

    Transmitting data over the power distribution network - Power Line Communications (PLC) -provides an interesting solution to reducing the weight and complexity of wiring networks in commercial aircraft. One of the potential roadblocks for the introduction of this technology is achieving EMC emissions compliance. In this article an overview of the EMC conducted and radiated emissions testing for PLC- enabled aeronautics equipment is presented. Anomalies resulting from chamber resonances leading to discrepancies between the conducted emissions tests and the measured radiated emissions are identified and described. Measurements made according to the current version of the civil aeronautical EMC standard, EUROCAE ED-14F (RTCA DO-160F), show that PLC equipment can achieve full EMC emissions compliance.

  12. Case study: Comparison of motivation for achieving higher performance between self-directed and manager-directed aerospace engineering teams

    NASA Astrophysics Data System (ADS)

    Erlick, Katherine

    "The stereotype of engineers is that they are not people oriented; the stereotype implies that engineers would not work well in teams---that their task emphasis is a solo venture and does not encourage social aspects of collaboration" (Miner & Beyerlein, 1999, p. 16). The problem is determining the best method of providing a motivating environment where design engineers may contribute within a team in order to achieve higher performance in the organization. Theoretically, self-directed work teams perform at higher levels. But, allowing a design engineer to contribute to the team while still maintaining his or her anonymity is the key to success. Therefore, a motivating environment must be established to encourage greater self-actualization in design engineers. The purpose of this study is to determine the favorable motivational environment for design engineers and describe the comparison between two aerospace design-engineering teams: one self-directed and the other manager directed. Following the comparison, this study identified whether self-direction or manager-direction provides the favorable motivational environment for operating as a team in pursuit of achieving higher performance. The methodology used in this research was the case study focusing on the team's levels of job satisfaction and potential for higher performance. The collection of data came from three sources, (a) surveys, (b) researcher observer journal and (c) collection of artifacts. The surveys provided information regarding personal behavior characteristics, potentiality for higher performance and motivational attributes. The researcher journal provided information regarding team dynamics, individual interaction, conflict and conflict resolution. The milestone for performance was based on the collection of artifacts from the two teams. The findings from this study illustrated that whether the team was manager-directed or self-directed does not appear to influence the needs and wants of the

  13. "The Art of Punishing": The Research Assessment Exercise and the Ritualisation of Power in Higher Education.

    ERIC Educational Resources Information Center

    Broadhead, Lee-Anne; Howard, Sean

    1998-01-01

    Uses an analysis based on the work of M. Foucault to explore the nature and practice of disciplinary power in the context of higher education in the United Kingdom (U.K.), focusing on the Research Assessment Exercise (RAE) undertaken by the U.K. Higher Education Funding Councils. The lack of impact of the RAE is examined. (SLD)

  14. Sex, Grades and Power in Higher Education in Ghana and Tanzania

    ERIC Educational Resources Information Center

    Morley, Louise

    2011-01-01

    Quantitative increases tell a partial story about the quality of women's participation in higher education. Women students' reporting of sexual harassment has been noteworthy in a recent study that I directed on widening participation in higher education in Ghana and Tanzania. The hierarchical and gendered power relations within universities have…

  15. What Does Monogamy in Higher Powers of a Correlation Measure Mean?

    NASA Astrophysics Data System (ADS)

    Geetha, Pilukuli Janardhana; Sudha; Devi, Alevoor Raghavendra Usha

    We examine here the proposition that all multiparty quantum states can be made monogamous by considering positive integral powers of any quantum correlation measure. With Rajagopal-Rendell quantum deficit as the measure of quantum correlations for symmetric 3-qubit pure states, we illustrate that monogamy inequality is satisfied for higher powers of quantum deficit. We discuss the drawbacks of this inequality in quantification of correlations in the state. We also prove a monogamy inequality in higher powers of classical mutual information and bring out the fact that such inequality need not necessarily imply restricted shareability of correlations. We thus disprove the utility of higher powers of any correlation measure in establishing monogamous nature in multiparty quantum states.

  16. Achieving high focusing power for a large-aperture liquid crystal lens with novel hole-and-ring electrodes.

    PubMed

    Chiu, Chi-Wei; Lin, Yu-Cheng; Chao, Paul C-P; Fuh, Andy Y-G

    2008-11-10

    Aiming to equip commercial camera modules, such as the optical imaging systems with a CMOS sensor module in 3 Mega pixels, an ultra thin liquid crystal lens with designed hole-and-ring electrodes is proposed in this study to achieve high focusing power. The LC lens with proposed electrodes improves the central intensity of electric field which leads to better focusing quality. The overall thickness of the LC lens can be as thin as 1.2 mm and the shortest focal length of the 4 mm-aperture lens occurs at 20 cm under an applied voltage of 30 V at 1 KHz. The inner ring electrode requires only 40% of applied voltage of the external hole electrode. The applied voltages for this internal ring and external hole electrodes can simply be realized by a pre-designed parallel resistance pair and a single voltage source. Experiments are conducted for validation and it shows that the designed LC lens owns good image clearness and contrast at the focal plane. The proposed design reduces the thickness of LC lens and is capable of achieving relative higher focusing power than past studies with lower applied voltage. PMID:19582020

  17. Power-gated 32 bit microprocessor with a power controller circuit activated by deep-sleep-mode instruction achieving ultra-low power operation

    NASA Astrophysics Data System (ADS)

    Koike, Hiroki; Ohsawa, Takashi; Miura, Sadahiko; Honjo, Hiroaki; Ikeda, Shoji; Hanyu, Takahiro; Ohno, Hideo; Endoh, Tetsuo

    2015-04-01

    A spintronic-based power-gated micro-processing unit (MPU) is proposed. It includes a power control circuit activated by the newly supported power-off instruction for the deep-sleep mode. These means enable the power-off procedure for the MPU to be executed appropriately. A test chip was designed and fabricated using 90 nm CMOS and an additional 100 nm MTJ process; it was successfully operated. The guideline of the energy reduction effects for this MPU was presented, using the estimation based on the measurement results of the test chip. The result shows that a large operation energy reduction of 1/28 can be achieved when the operation duty is 10%, under the condition of a sufficient number of idle clock cycles.

  18. Concentrating solar power in Europe, the Middle East and North Africa: achieving its potential

    NASA Astrophysics Data System (ADS)

    Pitz-Paal, R.; Amin, A.; Bettzüge, M.; Eames, P.; Fabrizi, F.; Flamant, G.; Garcia Novo, F.; Holmes, J.; Kribus, A.; van der Laan, H.; Lopez, C.; Papagiannakopoulos, P.; Pihl, E.; Smith, P.; Wagner, H.-J.

    2012-10-01

    Concentrating solar power (CSP) is a commercially available renewable energy technology capable of harnessing the immense solar resource in Southern Europe, the Middle East and North Africa (the MENA region), and elsewhere. This paper summarises the findings of a study by the European Academies Science Advisory Council which has examined the current status and development challenges of CSP, and consequently has evaluated the potential contribution of CSP in Europe and the MENA region to 2050. It identifies the actions that will be required by scientists, engineers, policy makers, politicians, business and investors alike, to enable this vast solar resource to make a major contribution to establishing a sustainable energy system. The study concludes that cost reductions of 50-60% in CSP electricity may reasonably be expected in the next 10-15 years, enabling the technology to be cost competitive with fossil-fired power generation at some point between 2020 and 2030. Incorporation of storage delivers added value in enabling CSP to deliver dispatchable power. Incentive schemes will be needed in Europe and MENA countries to enable this point to be achieved. Such schemes should reflect the true value of electricity to the grid, effectively drive R&D, and ensure transparency of performance and cost data.

  19. Harnessing the Power of Information Technology: Open Business Models in Higher Education

    ERIC Educational Resources Information Center

    Sheets, Robert G.; Crawford, Stephen

    2012-01-01

    Higher education is under enormous pressure to improve outcomes and reduce costs. Information technology can help achieve these goals, but only if it is properly harnessed. This article argues that one key to harnessing information technology is business model innovation that results in more "open" and "unbundled" operations in learning and…

  20. Testing of Passive Safety System Performance for Higher Power Advanced Reactors

    SciTech Connect

    brian G. Woods; Jose Reyes, Jr.; John Woods; John Groome; Richard Wright

    2004-12-31

    This report describes the results of NERI research on the testing of advanced passive safety performance for the Westinghouse AP1000 design. The objectives of this research were: (a) to assess the AP1000 passive safety system core cooling performance under high decay power conditions for a spectrum of breaks located at a variety of locations, (b) to compare advanced thermal hydraulic computer code predictions to the APEX high decay power test data and (c) to develop new passive safety system concepts that could be used for Generation IV higher power reactors.

  1. Aptitude Tests Versus School Exams as Selection Tools for Higher Education and the Case for Assessing Educational Achievement in Context

    ERIC Educational Resources Information Center

    Stringer, Neil

    2008-01-01

    Advocates of using a US-style SAT for university selection claim that it is fairer to applicants from disadvantaged backgrounds than achievement tests because it assesses potential, not achievement, and that it allows finer discrimination between top applicants than GCEs. The pros and cons of aptitude tests in principle are discussed, focusing on…

  2. Study of the Relationship between Study Habits and Academic Achievement of Students: A Case of Spicer Higher Secondary School, India

    ERIC Educational Resources Information Center

    Siahi, Evans Atsiaya; Maiyo, Julius K.

    2015-01-01

    The studies on the correlation of academic achievement have paved way for control and manipulation of related variables for quality results in schools. In spite of the facts that schools impart uniform classroom instructions to all students, wide range of difference is observed in their academic achievement. The study sought to determine the…

  3. A Study to Assess the Achievement Motivation of Higher Secondary Students in Relation to Their Noise Sensitivity

    ERIC Educational Resources Information Center

    Latha, Prema

    2014-01-01

    Disturbing sounds are often referred to as noise, and if extreme enough in degree, intensity or frequency, it is referred to as noise pollution. Achievement refers to a change in study behavior in relation to their noise sensitivity and learning in the educational sense by achieving results in changed responses to certain types of stimuli like…

  4. American Indian and Alaska Native Higher Education: Toward a New Century of Academic Achievement and Cultural Integrity.

    ERIC Educational Resources Information Center

    Wright, Bobby

    This paper reviews the history of higher education for Native Americans and proposes change strategies. Assimilation was the primary goal of higher education from early colonial times to the 20th century. Tribal response ranged from resistance to support of higher education. When the Federal Government began to dominate Native education in the…

  5. Power Distance in Online Learning: Experience of Chinese Learners in U.S. Higher Education

    ERIC Educational Resources Information Center

    Zhang, Yi (Leaf)

    2013-01-01

    The purpose of this research study was to explore the influence of Confucian-heritage culture on Chinese learners' online learning and engagement in online discussion in U.S. higher education. More specifically, this research studied Chinese learners' perceptions of power distance and its impact on their interactions with instructors and…

  6. Attachment to God/Higher Power and Bulimic Symptoms among College Women

    ERIC Educational Resources Information Center

    Buser, Juleen K.; Gibson, Sandy

    2016-01-01

    The authors examined the relationship between avoidant and anxious attachment to God/Higher Power and bulimia symptoms among 599 female college student participants. After controlling for body mass index, the authors found a positive association between both attachment variables and bulimia. When entered together in a regression, anxious…

  7. Assessing Power Issues in Canadian and Jamaican Women's Experiences in Learning via Distance in Higher Education

    ERIC Educational Resources Information Center

    Gouthro, Patricia A.

    2004-01-01

    This paper examines a qualitative research study which examines the experiences of ten Jamaican and Canadian women engaged in learning via distance in a graduate adult education program. Using a critical feminist perspective, three power issues emerged as topics for discussion that are important for distance educators in higher education to take…

  8. Power Dynamics with International Students: From the Perspective of Domestic Students in Korean Higher Education

    ERIC Educational Resources Information Center

    Jon, Jae-Eun

    2012-01-01

    This paper explored the power dynamics between domestic and international students in the context of higher education in an Asian non-English speaking country, Korea. Despite increased international student mobility in recent years, little is known about the relationship dynamics among students from different countries, especially related to power…

  9. Preparing for a Global Community. Achieving an International Perspective in Higher Education. ASHE-ERIC Higher Education Report No. 2, 1992.

    ERIC Educational Resources Information Center

    Pickert, Sarah M.

    This report discusses the response of colleges and universities in the United States to the need of graduate students to become equipped to make personal and public policy decisions as citizens of an international society. Curriculum changes are showing a tightening of foreign language standards in schools of higher education and, throughout the…

  10. Gauge unification in extra dimensions: power corrections vs. higher dimension operators

    NASA Astrophysics Data System (ADS)

    Hebecker, A.; Westphal, A.

    2004-11-01

    Power-like loop corrections to gauge couplings are a generic feature of higher-dimensional field theories. In supersymmetric grand unified theories in d=5 dimensions, such corrections arise only in the presence of a vacuum expectation value of the adjoint scalar of the gauge multiplet. We show that, using the analysis of the exact quantum effective action by Intriligator, Morrison and Seiberg, these power corrections can be understood as the effect of higher dimension operators. Such operators, both classical and quantum, are highly constrained by gauge symmetry and supersymmetry. As a result, even non-perturbatively large contributions to gauge coupling unification can be unambiguously determined within 5d low-energy effective field theory. Since no massive hypermultiplet matter exists in 6 dimensions, the predictivity is further enhanced by embedding the 5d model in a 6d gauge theory relevant at smaller distances. Thus, large and quantitatively controlled power-law contributions to gauge couplings arise naturally and can, in the most extreme case, lead to calculable TeV-scale power law unification. We identify a simple 5d SU(5) model with one massless 10 in the bulk where the power-law effect is exactly MSSM-like.

  11. Boosting K-12 Student Achievement: How Corporate America and Higher Ed Can Help. Forum Focus. Fall 2006

    ERIC Educational Resources Information Center

    Ehrlich, Jenifer, Ed.

    2006-01-01

    "Forum Focus" was a semi-annual magazine of the Business-Higher Education Forum (BHEF) that featured articles on the role of business and higher education on significant issues affecting the P-16 education system. The magazine typically focused on themes featured at the most recently held semi-annual Forum meeting at the time of publication.…

  12. Mode-converters for rectangular-core fiber amplifiers to achieve diffraction-limited power scaling.

    PubMed

    Sridharan, Arun Kumar; Pax, Paul H; Heebner, John E; Drachenberg, Derrek R; Armstrong, J Paul; Dawson, Jay W

    2012-12-17

    A rectangular-core (ribbon) fiber that guides and amplifies a single higher-order-mode (HOM) can potentially scale to much higher average powers than what is possible in traditional circular-core large-mode-area fibers. Such an amplifier would require mode-conversion at the input to enable interfacing with seed sources that typically output TEM(00) mode radiation and at the output to generate diffraction-limited radiation for end-user applications. We present the first simulation and experimental results of a mode conversion technique that uses two diffractive-optic-elements in conjugate Fourier planes to convert a diffraction limited TEM(00) mode to the HOM of a ribbon fiber. Mode-conversion-efficiency is approximately 84% and can theoretically approach 100%. We also demonstrate a mode-converter system that converts a single HOM of a ribbon fiber back to a diffraction-limited TEM(00) mode. Conversion efficiency is a record 80.5%. PMID:23263119

  13. A general solution strategy of modified power method for higher mode solutions

    NASA Astrophysics Data System (ADS)

    Zhang, Peng; Lee, Hyunsuk; Lee, Deokjung

    2016-01-01

    A general solution strategy of the modified power iteration method for calculating higher eigenmodes has been developed and applied in continuous energy Monte Carlo simulation. The new approach adopts four features: 1) the eigen decomposition of transfer matrix, 2) weight cancellation for higher modes, 3) population control with higher mode weights, and 4) stabilization technique of statistical fluctuations using multi-cycle accumulations. The numerical tests of neutron transport eigenvalue problems successfully demonstrate that the new strategy can significantly accelerate the fission source convergence with stable convergence behavior while obtaining multiple higher eigenmodes at the same time. The advantages of the new strategy can be summarized as 1) the replacement of the cumbersome solution step of high order polynomial equations required by Booth's original method with the simple matrix eigen decomposition, 2) faster fission source convergence in inactive cycles, 3) more stable behaviors in both inactive and active cycles, and 4) smaller variances in active cycles. Advantages 3 and 4 can be attributed to the lower sensitivity of the new strategy to statistical fluctuations due to the multi-cycle accumulations. The application of the modified power method to continuous energy Monte Carlo simulation and the higher eigenmodes up to 4th order are reported for the first time in this paper.

  14. Retrospective Understandings: Individual-Collective Influences on High Achieving Black Students at a Predominantly White Institution of Higher Education

    ERIC Educational Resources Information Center

    Brooks, Candice Elaine

    2012-01-01

    This article discusses the findings of an exploratory qualitative study that examined the influences of individual and collective sociocultural identities on the community involvements and high academic achievement of 10 Black alumni who attended a predominantly White institution between 1985 and 2008. Syntagmatic narrative analysis and…

  15. Using Valid and Invalid Experimental Designs to Teach the Control of Variables Strategy in Higher and Lower Achieving Classrooms

    ERIC Educational Resources Information Center

    Lorch, Robert F., Jr.; Lorch, Elizabeth P.; Freer, Benjamin Dunham; Dunlap, Emily E.; Hodell, Emily C.; Calderhead, William J.

    2014-01-01

    Students (n = 1,069) from 60 4th-grade classrooms were taught the control of variables strategy (CVS) for designing experiments. Half of the classrooms were in schools that performed well on a state-mandated test of science achievement, and half were in schools that performed relatively poorly. Three teaching interventions were compared: an…

  16. Ubiquitous Laptop Usage in Higher Education: Effects on Student Achievement, Student Satisfaction, and Constructivist Measures in Honors and Traditional Classrooms

    ERIC Educational Resources Information Center

    Wurst, Christian; Smarkola, Claudia; Gaffney, Mary Anne

    2008-01-01

    Three years of graduating business honors cohorts in a large urban university were sampled to determine whether the introduction of ubiquitous laptop computers into the honors program contributed to student achievement, student satisfaction and constructivist teaching activities. The first year cohort consisted of honors students who did not have…

  17. Achieving Maximum Power from Thermoelectric Generators with Maximum-Power-Point-Tracking Circuits Composed of a Boost-Cascaded-with-Buck Converter

    NASA Astrophysics Data System (ADS)

    Park, Hyunbin; Sim, Minseob; Kim, Shiho

    2015-06-01

    We propose a way of achieving maximum power and power-transfer efficiency from thermoelectric generators by optimized selection of maximum-power-point-tracking (MPPT) circuits composed of a boost-cascaded-with-buck converter. We investigated the effect of switch resistance on the MPPT performance of thermoelectric generators. The on-resistances of the switches affect the decrease in the conversion gain and reduce the maximum output power obtainable. Although the incremental values of the switch resistances are small, the resulting difference in the maximum duty ratio between the input and output powers is significant. For an MPPT controller composed of a boost converter with a practical nonideal switch, we need to monitor the output power instead of the input power to track the maximum power point of the thermoelectric generator. We provide a design strategy for MPPT controllers by considering the compromise in which a decrease in switch resistance causes an increase in the parasitic capacitance of the switch.

  18. Higher-order sliding mode control of leg power in paraplegic FES-cycling.

    PubMed

    Farhoud, Aidin; Erfanian, Abbas

    2010-01-01

    In this paper, we propose a robust control methodology based on high order sliding mode (HOSM) for control of the leg power in FES-Cycling. A major obstacle to the development of control systems for functional electrical stimulation (FES) has been the highly non-linear, time-varying properties of neuromusculoskeletal systems. A useful and powerful control scheme to deal with the uncertainties, nonlinearities, and bounded external disturbances is the sliding mode control (SMC). The main drawback of the classical sliding mode is mostly related to the so-called chattering which is dangerous for FES applications. To avoid chattering, HOSM approaches were proposed. Keeping the main advantages of the original approach, at the same time they totally remove the chattering effect and provide for even higher accuracy in realization. The results of simulation studies and experiments on two paraplegic subjects show the superior performance of the leg power control during different conditions of operation using HOSM control scheme. PMID:21096932

  19. The Role of Nuclear Power in Achieving the World We Want

    ERIC Educational Resources Information Center

    Driscoll, M. J.

    1970-01-01

    Supports the development of nuclear power plants and considers some problems and possible solutions: future power needs, power costs, thermal pollution, radionuclide discharge. Describes advantages and applications of dual purpose power plants for purifying water, producing phosphorus and ammonia, and serving as fast breeder reactors for Pu 239.…

  20. Combined electromagnetic and permanent magnet undulator to achieve higher field and easier field variation without mechanical movement

    SciTech Connect

    Bogachenkov, V.A.; Papadichev, V.A.

    1995-12-31

    Hybrid or pure permanent magnet undulators (PMU) are widely used because they have high field quality, allow easy field correction and do not consume power. Their main drawback is the necessity of moving one half of the magnet relative to the other to change field value, which requires a high precision, remotely controlled (and thus costly) driving system On the other hand, electromagnetic undulatory (EMU) have no problem with field variation, but consume too much power (100 - 400 kW) for high fields. Adding permanent magnets to EMU results in a considerable decrease of power consumption, while retaining the advantage of easily changing field level. A model of a CW combined EM+PM plane undulator having a 4.8 cm period and 8 periods long is described. It is simple in design and cheap in manufacturing: magnet yokes are made of soft steel rings in which 1.6 cm air gaps were cut to form pole faces. Odd yokes are placed to one side of the undulator axis and even yokes to the other with the air gaps on the axis. Each set of yokes is excited by its own separate winding of simple racetrack shape. Undulator deflection parameter K = 1.1 (B = 2.4 kG) can be reached at a 0.78kW power level, i.e., less than 100 W per period, while without PM only a maximum K = 0.8 can be obtained and requires 4 kW power. No water cooling is needed, which greatly simplifies undulator design. The undulator was not optimized relative to the axial-air-gap to ring-width ratio: one might expect some increase in field level for thinner rings. Field amplitude depends also on relative transverse position of odd and even pole faces.

  1. Efficient nonlinear generation of high power, higher order, ultrafast "perfect" vortices in green.

    PubMed

    Apurv Chaitanya, N; Jabir, M V; Samanta, G K

    2016-04-01

    We report on efficient nonlinear generation of ultrafast, higher order "perfect" vortices at the green wavelength. Based on Fourier transformation of the higher order Bessel-Gauss (BG) beam generated through the combination of the spiral phase plate and axicon, we have transformed the Gaussian beam of the ultrafast Yb-fiber laser at 1060 nm into perfect vortices of power 4.4 W and order up to 6. Using single-pass second-harmonic generation (SHG) of such vortices in 5 mm long chirped MgO-doped, periodically poled congruent LiNbO3 crystal, we have generated perfect vortices at green wavelength (530 nm) with output power of 1.2 W and vortex order up to 12 at a single-pass conversion efficiency of 27%, independent of the orders. This is the highest single-pass SHG efficiency of any optical beams other than Gaussian beams. Unlike the disintegration of higher order vortices due to spatial walk-off effect in birefringent crystals, here, the use of the quasi-phase-matching process enables generation of high-quality vortices, even at higher orders. The green perfect vortices of all orders have temporal and spectral widths of 507 fs and 1.9 nm, respectively, corresponding to a time-bandwidth product of 1.02. PMID:27192233

  2. Causal Attribution: Actor-Observer Bias in Academic Achievement among Students at an Institution of Higher Learning

    ERIC Educational Resources Information Center

    Mudhovozi, P.; Gumani, M.; Maunganidze, L.; Sodi, T.

    2010-01-01

    The study explores the attribution styles of in-group and out-group members. Eighty-four (42 female and 42 male) undergraduate students were randomly selected from the Faculty of Education at an institution of higher learning in Zimbabwe. A questionnaire was used to capture the opinions of the participants. The data was analysed using the…

  3. Going Green: A Comparative Case Study of How Three Higher Education Institutions Achieved Progressive Measures of Environmental Sustainability

    ERIC Educational Resources Information Center

    James, Matthew R.

    2009-01-01

    Leal Filho, MacDermot, and Padgam (1996) contended that post-secondary institutions are well suited to take on leadership responsibilities for society's environmental protection. Higher education has the unique academic freedom to engage in critical thinking and bold experimentation in environmental sustainability (Cortese, 2003). Although…

  4. Building Coalitions for Minority Success: A Report of the SHEEO Project on Minority Achievement in Higher Education.

    ERIC Educational Resources Information Center

    Mingle, James R., Ed.; Rodriguez, Esther M., Ed.

    This report describes initiatives of higher education boards to provide equal educational opportunities for minority students in the following states: (1) Arizona; (2) Colorado; (3) Illinois; (4) Massachusetts; (5) Montana; (6) New York; (7) Ohio; and (8) Tennessee. Evidence of school completion, academic preparation, college participation rates,…

  5. Achievements and Consequences of Two Decades of Quality Assurance in Higher Education: A Personal View from the Edge

    ERIC Educational Resources Information Center

    Houston, Don

    2010-01-01

    While the past two decades have seen significant expansion and harmonisation of quality assurance mechanisms in higher education, there is limited evidence of positive effects on the quality of core processes of teaching and learning. The paradox of the separation of assurance from improvement is explored. A shift in focus from surveillance to…

  6. A Fresh Perspective on Progress Files--A Way of Representing Complex Learning and Achievement in Higher Education

    ERIC Educational Resources Information Center

    Jackson, Norman; Ward, Rob

    2004-01-01

    This article addresses the challenge of developing new conceptual knowledge to help us make better sense of the way that higher education is approaching the "problem" of representing (documenting, certifying and communicating by other means) students' learning for the super-complex world described by Barnett (2000b). The current UK solution to…

  7. Unraveling the sequence information in COI barcode to achieve higher taxon assignment based on Indian freshwater fishes.

    PubMed

    Chakraborty, Mohua; Ghosh, Sankar Kumar

    2015-04-01

    Efficacy of cytochrome c oxidase subunit I (COI) DNA barcode in higher taxon assignment is still under debate in spite of several attempts, using the conventional DNA barcoding methods, to assign higher taxa. Here we try to understand whether nucleotide and amino acid sequence in COI gene carry sufficient information to assign species to their higher taxonomic rank, using 160 species of Indian freshwater fishes. Our results reveal that with increase in the taxonomic rank, sequence conservation decreases for both nucleotides and amino acids. Order level exhibits lowest conservation with 50% of the nucleotides and amino acids being conserved. Among the variable sites, 30-50% were found to carry high information content within an order, while it was 70-80% within a family and 80-99% within a genus. High information content shows sites with almost conserved sequence but varying at one or two locations, which can be due to variations at species or population level. Thus, the potential of COI gene in higher taxon assignment is revealed with validation of ample inherent signals latent in the gene. PMID:24409929

  8. Higher Achievement and Improvement Through Instruction with Computers and Scholarly Transition and Resource Systems Program (Project HAITI STARS), 1989-90. Final Evaluation Report.

    ERIC Educational Resources Information Center

    New York City Board of Education, Brooklyn, NY. Office of Research, Evaluation, and Assessment.

    A final evaluation was conducted in the 1989-90 school year of New York City (New York) Board of Education's project, Higher Achievement and Improvement Through Instruction with Computers and Scholarly Transition and Resource Systems (HAITI STARS). The project served 524 limited-English-proficient Spanish-speaking students at Far Rockaway High…

  9. Higher Achievement and Improvement Through Instruction with Computers and Scholarly Transition And Resource Systems Program (Project HAITI STARS). Final Evaluation Report, 1992-93. OER Report.

    ERIC Educational Resources Information Center

    Augustin, Marc A.

    The Higher Achievement and Improvement Through Instruction with Computers and Scholarly Transition And Resource Systems program (Project HAITI STARS), a federally-funded bilingual education program, served 425 students of limited English proficiency at three high schools in New York City during its fifth contract year. Students received…

  10. Thermodynamics of higher dimensional topological dilation black holes with a power-law Maxwell field

    NASA Astrophysics Data System (ADS)

    Zangeneh, M. Kord; Sheykhi, A.; Dehghani, M. H.

    2015-02-01

    In this paper, we extend the study on the nonlinear power-law Maxwell field to dilaton gravity. We introduce the (n +1 ) -dimensional action in which gravity is coupled to a dilaton and power-law nonlinear Maxwell field, and we obtain the field equations by varying the action. We construct a new class of higher dimensional topological black hole solutions of Einstein-dilaton theory coupled to a power-law nonlinear Maxwell field and investigate the effects of the nonlinearity of the Maxwell source as well as the dilaton field on the properties of the spacetime. Interestingly enough, we find that the solutions exist provided one assumes three Liouville-type potentials for the dilaton field, and in the case of the Maxwell field, one of the Liouville potentials vanishes. After studying the physical properties of the solutions, we compute the mass, charge, electric potential and temperature of the topological dilaton black holes. We also study the thermodynamics and thermal stability of the solutions and disclose the effects of the dilaton field and the power-law Maxwell field on the thermodynamics of these black holes. Finally, we comment on the dynamical stability of the obtained solutions in four dimensions.

  11. How endogenous plant cell-wall degradation mechanisms can help achieve higher efficiency in saccharification of biomass.

    PubMed

    Tavares, Eveline Q P; De Souza, Amanda P; Buckeridge, Marcos S

    2015-07-01

    Cell-wall recalcitrance to hydrolysis still represents one of the major bottlenecks for second-generation bioethanol production. This occurs despite the development of pre-treatments, the prospect of new enzymes, and the production of transgenic plants with less-recalcitrant cell walls. Recalcitrance, which is the intrinsic resistance to breakdown imposed by polymer assembly, is the result of inherent limitations in its three domains. These consist of: (i) porosity, associated with a pectin matrix impairing trafficking through the wall; (ii) the glycomic code, which refers to the fine-structural emergent complexity of cell-wall polymers that are unique to cells, tissues, and species; and (iii) cellulose crystallinity, which refers to the organization in micro- and/or macrofibrils. One way to circumvent recalcitrance could be by following cell-wall hydrolysis strategies underlying plant endogenous mechanisms that are optimized to precisely modify cell walls in planta. Thus, the cell-wall degradation that occurs during fruit ripening, abscission, storage cell-wall mobilization, and aerenchyma formation are reviewed in order to highlight how plants deal with recalcitrance and which are the routes to couple prospective enzymes and cocktail designs with cell-wall features. The manipulation of key enzyme levels in planta can help achieving biologically pre-treated walls (i.e. less recalcitrant) before plants are harvested for bioethanol production. This may be helpful in decreasing the costs associated with producing bioethanol from biomass. PMID:25922489

  12. The Power of Perception: Mediating the Impact of Poverty on Student Achievement

    ERIC Educational Resources Information Center

    Dell'Angelo, Tabitha

    2016-01-01

    Race and class often marginalize students in impoverished urban neighborhoods, and this reality is evident in consistently low student achievement in many of the schools in these neighborhoods. This study examines how a teacher's sense of agency can help mediate the detrimental impact of poverty on student achievement. Teachers in a large…

  13. (De)Constructing Power in Higher Education Governance Structures: An Analysis of Representation and Roles in Governing Bodies

    ERIC Educational Resources Information Center

    Bótas, Paulo Charles Pimentel; Huisman, Jeroen

    2012-01-01

    This article explores how power relations are constructed in the governance of higher education institutions. It examines and deconstructs, from a Foucauldian perspective, power relations and mechanisms in the relationship between the state and higher education institutions, and between academic and management staff. This research article…

  14. Energy transmission and power sources for mechanical circulatory support devices to achieve total implantability.

    PubMed

    Wang, Jake X; Smith, Joshua R; Bonde, Pramod

    2014-04-01

    Left ventricular assist device therapy has radically improved congestive heart failure survival with smaller rotary pumps. The driveline used to power today's left ventricular assist devices, however, continues to be a source of infection, traumatic damage, and rehospitalization. Previous attempts to wirelessly power left ventricular assist devices using transcutaneous energy transfer systems have been limited by restrictions on separation distance and alignment between the transmit and receive coils. Resonant electrical energy transfer allows power delivery at larger distances without compromising safety and efficiency. This review covers the efforts to wirelessly power mechanical circulatory assist devices and the progress made in enhancing their energy sources. PMID:24530103

  15. Achievement and Climate Outcomes for the Knowledge Is Power Program in an Inner-City Middle School

    ERIC Educational Resources Information Center

    Ross, Steven M.; McDonald, Aaron J.; Alberg, Marty; McSparrin-Gallagher, Brenda

    2007-01-01

    This study was designed to examine the effects of a whole school reform, the Knowledge is Power Program (KIPP), specifically designed to raise academic achievement of at-risk urban middle school students by establishing an extended school day and year, a rigorous curriculum, after-school access to teachers, and increased family-school connections.…

  16. Predictive Power of School Based Assessment Scores on Students' Achievement in Junior Secondary Certificate Examination (JSCE) in English and Mathematics

    ERIC Educational Resources Information Center

    Opara, Ijeoma M.; Onyekuru, Bruno U.; Njoku, Joyce U.

    2015-01-01

    The study investigated the predictive power of school based assessment scores on students' achievement in Junior Secondary Certificate Examination (JSCE) in English and Mathematics. Two hypotheses tested at 0.05 level of significance guided the study. The study adopted an ex-post facto research design. A sample of 250 students were randomly drawn…

  17. Examining the Predictive Power of Autonomy and Self-Evaluation on High School Students' Language Achievement

    ERIC Educational Resources Information Center

    Yuksel, Ismail; Toker, Yalcin

    2013-01-01

    This study aims to determine language learners' autonomy, self-evaluation levels and to examine the predictive power of these two variables on language achievement. The study was designed as mixed method design and was conducted with 108 high school students. Data were collected through an autonomy scale, a self-evaluation scale, schools…

  18. The Use of Nanomaterials to Achieve NASA's Exploration Program Power Goals

    NASA Technical Reports Server (NTRS)

    Jeevarajan, J.

    2009-01-01

    This slide presentation reviews the power requirements for the space exploration and the lunar surface mobility programs. It includes information about the specifications for high energy batteries and the power requirements for lunar rovers, lunar outposts, lunar ascent module, and the lunar EVA suit.

  19. Effectiveness of PowerPoint Presentation on Students' Cognitive Achievement in Technical Drawing

    ERIC Educational Resources Information Center

    Gambari, Amosa Isiaka; Yusuf, Hamdalat Taiwo; Balogun, Sherifat Adepeju

    2015-01-01

    This paper discusses importance of technology education and evidence of declining performance of junior secondary school students in basic technology subject. Benefits of PowerPoint presentation in classroom instruction as a means to improve classroom teaching in the developing countries are also discussed. The effectiveness of PowerPoint…

  20. Analysis of OSNR requirements for higher modulation schemes for various local oscillator powers

    NASA Astrophysics Data System (ADS)

    Sahu, Amaresh Kumar

    2015-06-01

    To meet the growing demands of data traffic in long haul communication, it is necessary to efficiently use the low-loss region(C-band) of the optical spectrum, by increasing the no. of optical channels and increasing the bit rate on each channel .But narrow pulses occupy higher spectral bandwidth. To circumvent this problem, higher order modulation schemes such as QPSK and QAM can be used to modulate the bits, which increases the spectral efficiency without demanding any extra spectral bandwidth. On the receiver side, to meet a satisfy, a given BER, the received optical signal requires to have minimum OSNR. In our study in this paper, we analyses for different modulation schemes, the OSNR required with and without preamplifier. The theoretical limit of OSNR requirement for a modulation scheme is compared for a given link length by varying the local oscillator (LO) power. Our analysis shows that as we increase the local oscillator (LO) power, the OSNR requirement decreases for a given BER. Also a combination of preamplifier and local oscillator (LO) gives the OSNR closest to theoretical limit.

  1. Higher-power supercapacitor electrodes based on mesoporous manganese oxide coating on vertically aligned carbon nanofibers.

    PubMed

    Klankowski, Steven A; Pandey, Gaind P; Malek, Gary; Thomas, Conor R; Bernasek, Steven L; Wu, Judy; Li, Jun

    2015-05-14

    A study on the development of high-power supercapacitor materials based on formation of thick mesoporous MnO2 shells on a highly conductive 3D template using vertically aligned carbon nanofibers (VACNFs). Coaxial manganese shells of 100 to 600 nm nominal thicknesses are sputter-coated on VACNFs and then electrochemically oxidized into rose-petal-like mesoporous MnO2 structure. Such a 3D MnO2/VACNF hybrid architecture provides enhanced ion diffusion throughout the whole MnO2 shell and yields excellent current collection capability through the VACNF electrode. These two effects collectively enable faster electrochemical reactions during charge-discharge of MnO2 in 1 M Na2SO4. Thick MnO2 shells (up to 200 nm in radial thickness) can be employed, giving a specific capacitance up to 437 F g(-1). More importantly, supercapacitors employing such a 3D MnO2/VACNF hybrid electrode illustrate more than one order of magnitude higher specific power than the state-of-the-art ones based on other MnO2 structures, reaching ∼240 kW kg(-1), while maintaining a comparable specific energy in the range of 1 to 10 Wh kg(-1). This hybrid approach demonstrates the potential of 3D core-shell architectures for high-power energy storage devices. PMID:25894255

  2. Examining the integrity of measurement of cognitive abilities in the prediction of achievement: Comparisons and contrasts across variables from higher-order and bifactor models.

    PubMed

    Benson, Nicholas F; Kranzler, John H; Floyd, Randy G

    2016-10-01

    Prior research examining cognitive ability and academic achievement relations have been based on different theoretical models, have employed both latent variables as well as observed variables, and have used a variety of analytic methods. Not surprisingly, results have been inconsistent across studies. The aims of this study were to (a) examine how relations between psychometric g, Cattell-Horn-Carroll (CHC) broad abilities, and academic achievement differ across higher-order and bifactor models; (b) examine how well various types of observed scores corresponded with latent variables; and (c) compare two types of observed scores (i.e., refined and non-refined factor scores) as predictors of academic achievement. Results suggest that cognitive-achievement relations vary across theoretical models and that both types of factor scores tend to correspond well with the models on which they are based. However, orthogonal refined factor scores (derived from a bifactor model) have the advantage of controlling for multicollinearity arising from the measurement of psychometric g across all measures of cognitive abilities. Results indicate that the refined factor scores provide more precise representations of their targeted constructs than non-refined factor scores and maintain close correspondence with the cognitive-achievement relations observed for latent variables. Thus, we argue that orthogonal refined factor scores provide more accurate representations of the relations between CHC broad abilities and achievement outcomes than non-refined scores do. Further, the use of refined factor scores addresses calls for the application of scores based on latent variable models. PMID:27586067

  3. Development Efforts Expanded in Ion Propulsion: Ion Thrusters Developed With Higher Power Levels

    NASA Technical Reports Server (NTRS)

    Patterson, Michael J.; Rawlin, Vincent K.; Sovey, James S.

    2003-01-01

    The NASA Glenn Research Center was the major contributor of 2-kW-class ion thruster technology to the Deep Space 1 mission, which was successfully completed in early 2002. Recently, NASA s Office of Space Science awarded approximately $21 million to Glenn to develop higher power xenon ion propulsion systems for large flagship missions such as outer planet explorers and sample return missions. The project, referred to as NASA's Evolutionary Xenon Thruster (NEXT), is a logical follow-on to the ion propulsion system demonstrated on Deep Space 1. The propulsion system power level for NEXT is expected to be as high as 25 kW, incorporating multiple ion thrusters, each capable of being throttled over a 1- to 6-kW power range. To date, engineering model thrusters have been developed, and performance and plume diagnostics are now being documented. The project team-Glenn, the Jet Propulsion Laboratory, General Dynamics, Boeing Electron Dynamic Devices, the Applied Physics Laboratory, the University of Michigan, and Colorado State University-is in the process of developing hardware for a ground demonstration of the NEXT propulsion system, which comprises a xenon feed system, controllers, multiple thrusters, and power processors. The development program also will include life assessments by tests and analyses, single-string tests of ion thrusters and power systems, and finally, multistring thruster system tests in calendar year 2005. In addition, NASA's Office of Space Science selected Glenn to lead the development of a 25-kW xenon thruster to enable NASA to conduct future missions to the outer planets of Jupiter and beyond, under the High Power Electric Propulsion (HiPEP) program. The development of a 100-kW-class ion propulsion system and power conversion systems are critical components to enable future nuclear-electric propulsion systems. In fiscal year 2003, a team composed of Glenn, the Boeing Company, General Dynamics, the Applied Physics Laboratory, the Naval Research

  4. Public goods and private interests: The role of voluntary green power demand in achieving environmental improvements

    NASA Astrophysics Data System (ADS)

    Wiser, Ryan Hayes

    This dissertation explores the role of consumer purchasing behavior in providing public, environmental goods. It does so by empirically evaluating one market---voluntary demand for renewable energy. The dissertation addresses the following five research questions: (1) What does early experience with green power marketing tell us about the prospects for this market to deliver environmental benefits? (2) What product design and marketing approaches might be used to increase voluntary demand? (3) What motivates non-residential customers to voluntarily purchase green power? (4) What role might public policy play in the creation of the green power market? (5) What preferences do individuals hold on the most appropriate forms of support for renewable energy? By helping to answer these questions, this dissertation seeks to better understand the gap between widespread positive attitudes for the environment and an often-anemic response to green product offerings. It contributes to not only the public goods and environmental marketing literatures, but also to contingent valuation methodology and to an emerging literature on the motivations of firms to contribute to environmental causes. The analysis performed is diverse, and includes: a literature review, a mail survey of green power marketers, a mail survey of non-residential green power customers, and contingent valuation and opinion surveys of U.S. residents. Detailed statistical analysis is performed on the data collected from the residential and non-residential surveys. The analysis reveals that customer participation in green power programs to date has been weak. The possibility that the traditional economic concept of "free riding" may explain this low response is raised, and the dissertation identifies a number of marketing approaches that might be used to partially combat this problem. Analysis of survey data shows that non-residential green power purchases have been motivated principally by altruistic concerns

  5. Becoming a Great Teacher of Reading: Achieving High Rapid Reading Gains with Powerful, Differentiated Strategies

    ERIC Educational Resources Information Center

    Carbo, Marie

    2007-01-01

    Literacy expert Marie Carbo pairs identifying each learner's unique reading style with a wide range of differentiated strategies to help all learners experience greater reading success. Using these research-based methods, both novice and experienced teachers can increase reading achievement with all learners, including those who are at-risk,…

  6. Nuclear power supplies: Their potential and the practical problems to their achievement for space missions

    NASA Technical Reports Server (NTRS)

    Colston, B. W.

    1986-01-01

    Various issues associated with getting technology development of nuclear power systems moving at a pace which will support the anticipated need for such systems in later years is discussed. The projected power needs of such advanced space elements as growth space stations and lunar and planetary vehicles and bases are addressed briefly, and the relevance of nuclear power systems is discussed. A brief history and status of the U.S. nuclear reactor systems is provided, and some of the problems (real and/or perceived) are dealt with briefly. Key areas on which development attention should be focused in the near future are identified, and a suggested approach is recommended to help accelerate the process.

  7. Higher-power supercapacitor electrodes based on mesoporous manganese oxide coating on vertically aligned carbon nanofibers

    NASA Astrophysics Data System (ADS)

    Klankowski, Steven A.; Pandey, Gaind P.; Malek, Gary; Thomas, Conor R.; Bernasek, Steven L.; Wu, Judy; Li, Jun

    2015-04-01

    A study on the development of high-power supercapacitor materials based on formation of thick mesoporous MnO2 shells on a highly conductive 3D template using vertically aligned carbon nanofibers (VACNFs). Coaxial manganese shells of 100 to 600 nm nominal thicknesses are sputter-coated on VACNFs and then electrochemically oxidized into rose-petal-like mesoporous MnO2 structure. Such a 3D MnO2/VACNF hybrid architecture provides enhanced ion diffusion throughout the whole MnO2 shell and yields excellent current collection capability through the VACNF electrode. These two effects collectively enable faster electrochemical reactions during charge-discharge of MnO2 in 1 M Na2SO4. Thick MnO2 shells (up to 200 nm in radial thickness) can be employed, giving a specific capacitance up to 437 F g-1. More importantly, supercapacitors employing such a 3D MnO2/VACNF hybrid electrode illustrate more than one order of magnitude higher specific power than the state-of-the-art ones based on other MnO2 structures, reaching ~240 kW kg-1, while maintaining a comparable specific energy in the range of 1 to 10 Wh kg-1. This hybrid approach demonstrates the potential of 3D core-shell architectures for high-power energy storage devices.A study on the development of high-power supercapacitor materials based on formation of thick mesoporous MnO2 shells on a highly conductive 3D template using vertically aligned carbon nanofibers (VACNFs). Coaxial manganese shells of 100 to 600 nm nominal thicknesses are sputter-coated on VACNFs and then electrochemically oxidized into rose-petal-like mesoporous MnO2 structure. Such a 3D MnO2/VACNF hybrid architecture provides enhanced ion diffusion throughout the whole MnO2 shell and yields excellent current collection capability through the VACNF electrode. These two effects collectively enable faster electrochemical reactions during charge-discharge of MnO2 in 1 M Na2SO4. Thick MnO2 shells (up to 200 nm in radial thickness) can be employed, giving a

  8. Enhanced power factor of higher manganese silicide via melt spin synthesis method

    SciTech Connect

    Shi, Xiaoya; Shi, Xun; Li, Yulong; He, Ying; Chen, Lidong; Li, Qiang

    2014-12-30

    We report on the thermoelectric properties of the Higher Manganese Silicide MnSi₁.₇₅ (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²⁰ cm⁻³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper; the maximum value is superior to those reported in the literatures.

  9. Enhanced power factor of higher manganese silicide via melt spin synthesis method

    DOE PAGESBeta

    Shi, Xiaoya; Shi, Xun; Li, Yulong; He, Ying; Chen, Lidong; Li, Qiang

    2014-12-30

    We report on the thermoelectric properties of the Higher Manganese Silicide MnSi₁.₇₅ (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describemore » the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²⁰ cm⁻³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper; the maximum value is superior to those reported in the literatures.« less

  10. Enhanced power factor of higher manganese silicide via melt spin synthesis method

    SciTech Connect

    Shi, Xiaoya; Li, Qiang; Shi, Xun; Chen, Lidong; Li, Yulong; He, Ying

    2014-12-28

    We report on the thermoelectric properties of the higher manganese silicide MnSi{sub 1.75} synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example, the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5 × 10{sup 20 }cm{sup −3} at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper.

  11. High intensity focused ultrasound sonothrombolysis: the use of perfluorocarbon droplets to achieve clot lysis at reduced acoustic powers

    PubMed Central

    Pajek, Daniel; Burgess, Alison; Huang, Yuexi; Hynynen, Kullervo

    2014-01-01

    The purpose of this study was to evaluate use of intravascular perfluorocarbon (PFC) droplets to reduce the sonication powers required to achieve clot lysis using high intensity focused ultrasound (HIFU). HIFU with droplets was initially applied to blood clots in an in vitro flow apparatus and inertial cavitation thresholds were determined. An embolic model for ischemic stroke was used to demonstrate the feasibility of this technique in vivo. Recanalization with intravascular droplets was achieved in vivo at 24±5% of the sonication power without droplets. Rabbits receiving 1 ms pulsed sonication during continuous intravascular droplet infusion recanalized in 71% of cases (p=0.041 vs controls). Preliminary experiments showed that damage was contained to the ultrasonic focus, suggesting that safe treatments would be possible with a more tightly focused hemispherical array that allows the whole focus to be placed inside of the main arteries in the human brain. PMID:25023095

  12. Civil Rights Acts: The Use of Presidential Power to Achieve Equality in American Society.

    ERIC Educational Resources Information Center

    Porter, Jack

    1981-01-01

    Presents an activity for senior high government courses about how President Johnson used his powers of persuasion to obtain civil rights legislation. Students analyze the effectiveness of arguments and persuasive techniques in two letters from President Johnson to the Speaker of the House of Representatives. (RM)

  13. Playing Power Politics: How "A Nation at Risk" Achieved Its National Stature.

    ERIC Educational Resources Information Center

    Hlebowitsh, Peter S.

    1990-01-01

    This article attempts to reveal the working dimensions of power used to bring "A Nation at Risk" into national repute. Mackenzie's model of curriculum change is used to identify the sources of influence. The sources included access to bases of prestige, competence, money, legal authority, and mass communication. (Author/IAH)

  14. Combined Heat and Power System Achieves Millions in Cost Savings at Large University - Case Study

    SciTech Connect

    2013-05-29

    Texas A&M University is operating a high-efficiency combined heat and power (CHP) system at its district energy campus in College Station, Texas. Texas A&M received $10 million in U.S. Department of Energy funding from the American Recovery and Reinvestment Act (ARRA) of 2009 for this project. Private-sector cost share totaled $40 million.

  15. Power budget extension for higher-order modulation formats in PONs

    NASA Astrophysics Data System (ADS)

    Malekizandi, Mohammadreza; Emsia, Ali; Briggmann, Dieter; Le, Quang Trung; Djordjevic, Ivan B.; Küppers, Franko

    2013-12-01

    As demand for higher bandwidth is drastically increasing, bandwidth efficiency is going to be an issue in Passive Optical Networks (PONs). Moreover, network operators plan to reduce the number of central offices (COs) while extending the reach of the optical links, this enables them to reduce the deployment costs. This paper demonstrates the advantages of advanced modulation formats and a suitable configuration for the power budget enhancement of hybrid Wavelength Division Multiplexing-Time Division Multiplexing-Passive Optical Networks (WDM-TDM-PONs). The proposed technique can offer higher data rate, better bandwidth efficiency, and large number of customers. Differential (Quadrature) Phase Shift Keying (DQPSK) signals and Orthogonal Frequency Division Multiplexing (OFDM) will be considered. Simulations are performed using different modulation formats to evaluate the behavior of the proposed PON extender. Finally, Transmission of 1 Tbps WDM/TDM-OFDMPON over 60 km optical link is presented here. The simulation results, prove that 1600 users can be covered with 40 Gbps peak data rate.

  16. The honeymoon effect in job performance - Temporal increases in the predictive power of achievement motivation

    NASA Technical Reports Server (NTRS)

    Helmreich, Robert L.; Sawin, Linda L.; Carsrud, Alan L.

    1986-01-01

    Correlations between a job performance criterion and personality measures reflecting achievement motivation and an interpersonal orientation were examined at three points in time after completion of job training for a sample of airline reservations agents. Although correlations between the personality predictors and performance were small and nonsignificant for the 3-month period after beginning the job, by the end of six and eight months a number of significant relationships had emerged. Implications for the utility of personality measures in selection and performance prediction are discussed.

  17. Progress toward achieving high power and high efficiency semipolar LEDs and their characterization

    NASA Astrophysics Data System (ADS)

    Zhong, Hong

    Performance of current commercially available wurtzite nitride based light-emitting diodes (LEDs), grown along the polar (0001) c-plane orientation, is limited by the presence of polarization-related electric fields inside multi-quantum wells (MQWs). The discontinuities in both spontaneous and piezoelectric polarization at the heterointerfaces result in internal electric fields in the quantum wells. These electric fields cause carrier separation [quantum confined Stark effect (QCSE)] and reduce the radiative recombination rate within the quantum wells. One approach to reduce and possibly eliminate the polarization-related effects is to grow III-nitride devices on crystal planes that are inclined with respect to the c-axis, i.e., on semipolar planes. In this dissertation, metalorganic chemical vapor deposition (MOCVD) has been employed for the homoepitaxial growth of GaN based LEDs on semipolar orientations. As a consequence of growing on high-quality bulk GaN substrates, the LEDs have significantly reduced threading dislocation and stacking fault densities, resulting in remarkable improvements in EQE and output power. High efficiency semipolar (1011) violet-blue and blue LEDs have been demonstrated without any intentional effort to enhance the light extraction from those devices. Optimizations of epitaxial structures have led to increased output power and external quantum efficiency. A silicone encapsulated single quantum well blue LED with peak wavelength of 444 nm with output power of 24.3 mW, external quantum efficiency of 43% and luminous efficacy of 75 lm/W (with phosphorescent coating) at 20 mA has been demonstrated. Polarization fields in strained (1011) and (112¯2) InGaN quantum wells have been experimentally determined through bias-dependent optical studies. Our results show that the polarization field flips its direction in semipolar InGaN quantum wells with large inclination angles (i.e. around 60°). This suggests that there exists a polarization

  18. WWC Review of the Report "Staying on Track: Testing Higher Achievement's Long-Term Impact on Academic Outcomes and High School Choice." What Works Clearinghouse Single Study Review

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2014

    2014-01-01

    This study of 952 fifth and sixth graders in Washington, DC, and Alexandria, Virginia, found that students who were offered the "Higher Achievement" program had higher test scores in mathematical problem solving and were more likely to be admitted to and attend private competitive high schools. "Higher Achievement" is a…

  19. Emotion classification in Parkinson's disease by higher-order spectra and power spectrum features using EEG signals: a comparative study.

    PubMed

    Yuvaraj, R; Murugappan, M; Ibrahim, Norlinah Mohamed; Omar, Mohd Iqbal; Sundaraj, Kenneth; Mohamad, Khairiyah; Palaniappan, R; Satiyan, M

    2014-03-01

    Deficits in the ability to process emotions characterize several neuropsychiatric disorders and are traits of Parkinson's disease (PD), and there is need for a method of quantifying emotion, which is currently performed by clinical diagnosis. Electroencephalogram (EEG) signals, being an activity of central nervous system (CNS), can reflect the underlying true emotional state of a person. This study applied machine-learning algorithms to categorize EEG emotional states in PD patients that would classify six basic emotions (happiness and sadness, fear, anger, surprise and disgust) in comparison with healthy controls (HC). Emotional EEG data were recorded from 20 PD patients and 20 healthy age-, education level- and sex-matched controls using multimodal (audio-visual) stimuli. The use of nonlinear features motivated by the higher-order spectra (HOS) has been reported to be a promising approach to classify the emotional states. In this work, we made the comparative study of the performance of k-nearest neighbor (kNN) and support vector machine (SVM) classifiers using the features derived from HOS and from the power spectrum. Analysis of variance (ANOVA) showed that power spectrum and HOS based features were statistically significant among the six emotional states (p < 0.0001). Classification results shows that using the selected HOS based features instead of power spectrum based features provided comparatively better accuracy for all the six classes with an overall accuracy of 70.10% ± 2.83% and 77.29% ± 1.73% for PD patients and HC in beta (13-30 Hz) band using SVM classifier. Besides, PD patients achieved less accuracy in the processing of negative emotions (sadness, fear, anger and disgust) than in processing of positive emotions (happiness, surprise) compared with HC. These results demonstrate the effectiveness of applying machine learning techniques to the classification of emotional states in PD patients in a user independent manner using EEG signals. The

  20. Inhibition of breathing after surfactant depletion is achieved at a higher arterial PCO2 during ventilation with liquid than with gas

    PubMed Central

    Rieger-Fackeldey, Esther; Sindelar, Richard; Jonzon, Anders; Schulze, Andreas; Sedin, Gunnar

    2005-01-01

    Background Inhibition of phrenic nerve activity (PNA) can be achieved when alveolar ventilation is adequate and when stretching of lung tissue stimulates mechanoreceptors to inhibit inspiratory activity. During mechanical ventilation under different lung conditions, inhibition of PNA can provide a physiological setting at which ventilatory parameters can be compared and related to arterial blood gases and pH. Objective To study lung mechanics and gas exchange at inhibition of PNA during controlled gas ventilation (GV) and during partial liquid ventilation (PLV) before and after lung lavage. Methods Nine anaesthetised, mechanically ventilated young cats (age 3.8 ± 0.5 months, weight 2.3 ± 0.1 kg) (mean ± SD) were studied with stepwise increases in peak inspiratory pressure (PIP) until total inhibition of PNA was attained before lavage (with GV) and after lavage (GV and PLV). Tidal volume (Vt), PIP, oesophageal pressure and arterial blood gases were measured at inhibition of PNA. One way repeated measures analysis of variance and Student Newman Keuls-tests were used for statistical analysis. Results During GV, inhibition of PNA occurred at lower PIP, transpulmonary pressure (Ptp) and Vt before than after lung lavage. After lavage, inhibition of inspiratory activity was achieved at the same PIP, Ptp and Vt during GV and PLV, but occurred at a higher PaCO2 during PLV. After lavage compliance at inhibition was almost the same during GV and PLV and resistance was lower during GV than during PLV. Conclusion Inhibition of inspiratory activity occurs at a higher PaCO2 during PLV than during GV in cats with surfactant-depleted lungs. This could indicate that PLV induces better recruitment of mechanoreceptors than GV. PMID:15748281

  1. Lightweight Integrated Solar Array (LISA): Providing Higher Power to Small Spacecraft

    NASA Technical Reports Server (NTRS)

    Johnson, Les; Carr, John; Fabisinski, Leo; Lockett, Tiffany Russell

    2015-01-01

    Affordable and convenient access to electrical power is essential for all spacecraft and is a critical design driver for the next generation of smallsats, including CubeSats, which are currently extremely power limited. The Lightweight Integrated Solar Array (LISA), a concept designed, prototyped, and tested at the NASA Marshall Space Flight Center (MSFC) in Huntsville, Alabama provides an affordable, lightweight, scalable, and easily manufactured approach for power generation in space. This flexible technology has many wide-ranging applications from serving small satellites to providing abundant power to large spacecraft in GEO and beyond. By using very thin, ultraflexible solar arrays adhered to an inflatable or deployable structure, a large area (and thus large amount of power) can be folded and packaged into a relatively small volume.

  2. Higher Order Model Power Calculation of the 56 MHz SRF Cavity

    SciTech Connect

    Choi,E.

    2008-08-01

    In this report, the HOM power dissipated to the load in the 56 MHz RF cavity is calculated. The HOM frequencies and Q factors with the inserted HOM damper are obtained from the simulations by MWS and SLAC codes.

  3. Lightweight Innovative Solar Array (LISA): Providing Higher Power to Small Spacecraft

    NASA Technical Reports Server (NTRS)

    Johnson, Les; Carr, John; Fabisinski, Leo; Russell,Tiffany; Smith, Leigh

    2015-01-01

    Affordable and convenient access to electrical power is essential for all spacecraft and is a critical design driver for the next generation of smallsats, including cubesats, which are currently extremely power limited. The Lightweight Innovative Solar Array (LISA), a concept designed, prototyped, and tested at the NASA Marshall Space Flight Center (MSFC) in Huntsville, Alabama provides an affordable, lightweight, scalable, and easily manufactured approach for power generation in space. This flexible technology has many wide-ranging applications from serving small satellites to providing abundant power to large spacecraft in GEO and beyond. By using very thin, ultra-flexible solar arrays adhered to an inflatable structure, a large area (and thus large amount of power) can be folded and packaged into a relatively small volume. The LISA array comprises a launch-stowed, orbit-deployed structure on which lightweight photovoltaic devices and, potentially, transceiver elements are embedded. The system will provide a 2.5 to 5 fold increase in specific power generation (Watts/kilogram) coupled with a >2x enhancement of stowed volume (Watts/cubic-meter) and a decrease in cost (dollars/Watt) when compared to state-of-the-art solar arrays.

  4. Internationalization, Regionalization, and Soft Power: China's Relations with ASEAN Member Countries in Higher Education

    ERIC Educational Resources Information Center

    Yang, Rui

    2012-01-01

    Since the late 1980s, there has been a resurgence of regionalism in world politics. Prospects for new alliances are opened up often on a regional basis. In East and Southeast Asia, regionalization is becoming evident in higher education, with both awareness and signs of a rising ASEAN+3 higher education community. The quest for regional influence…

  5. Present Trends in Power Relations Between Government and Higher Education (The Province of Ontario as a Case in Point).

    ERIC Educational Resources Information Center

    Venton, J. Peter

    Power relations between government and higher education in Ontario, Canada, with specific reference to financing and to graduate program development, are addressed. The types of postsecondary institutions and the roles of the Ontario Council on University Affiars (OCUA) and the Council of Ontario Universities (COU) are identified. It is suggested…

  6. Applying the Many-Facet Rasch Model to Evaluate PowerPoint Presentation Performance in Higher Education

    ERIC Educational Resources Information Center

    Basturk, Ramazan

    2008-01-01

    This study investigated the usefulness of the many-facet Rasch model (MFRM) in evaluating the quality of performance related to PowerPoint presentations in higher education. The Rasch Model utilizes item response theory stating that the probability of a correct response to a test item/task depends largely on a single parameter, the ability of the…

  7. Higher order corrections to the large scale matter power spectrum in the presence of massive neutrinos

    SciTech Connect

    Wong, Yvonne Y Y

    2008-10-15

    We present the first systematic derivation of the one-loop correction to the large scale matter power spectrum in a mixed cold + hot dark matter cosmology with subdominant massive neutrino hot dark matter. Starting with the equations of motion for the density and velocity fields, we derive perturbative solutions to these quantities and construct recursion relations for the interaction kernels, noting and justifying all approximations along the way. We find interaction kernels similar to those for a cold dark matter only universe, but with additional dependences on the neutrino energy density fraction f{sub {nu}} and the linear growth functions of the incoming wavevectors. Compared with the f{sub {nu}} = 0 case, the one-loop corrected matter power spectrum for a mixed dark matter cosmology exhibits a decrease in small scale power exceeding the canonical {approx}8f{sub {nu}} suppression predicted by linear theory, a feature also seen in multi-component N-body simulations.

  8. Acute Response of Well-Trained Sprinters to a 100-m Race: Higher Sprinting Velocity Achieved With Increased Step Rate Compared With Speed Training.

    PubMed

    Otsuka, Mitsuo; Kawahara, Taisuke; Isaka, Tadao

    2016-03-01

    This study aimed to clarify the contribution of differences in step length and step rate to sprinting velocity in an athletic race compared with speed training. Nineteen well-trained male and female sprinters volunteered to participate in this study. Sprinting motions were recorded for each sprinter during both 100-m races and speed training (60-, 80-, and 100-m dash from a block start) for 14 days before the race. Repeated-measures analysis of covariance was used to compare the step characteristics and sprinting velocity between race and speed training, adjusted for covariates including race-training differences in the coefficients of restitution of the all-weather track, wind speed, air temperature, and sex. The average sprinting velocity to the 50-m mark was significantly greater in the race than in speed training (8.26 ± 0.22 m·s vs. 8.00 ± 0.70 m·s, p < 0.01). Although no significant difference was seen in the average step length to the 50-m mark between the race and speed training (1.81 ± 0.09 m vs. 1.80 ± 0.09 m, p = 0.065), the average step rate was significantly greater in the race than in speed training (4.56 ± 0.17 Hz vs. 4.46 ± 0.13 Hz, p < 0.01). These findings suggest that sprinters achieve higher sprinting velocity and can run with higher exercise intensity and more rapid motion during a race than during speed training, even if speed training was performed at perceived high intensity. PMID:26907837

  9. Achievement of very low jitter extraction of high power proton beams in the J-PARC RCS

    NASA Astrophysics Data System (ADS)

    Tamura, Fumihiko; Yoshii, Masahito; Schnase, Alexander; Ohmori, Chihiro; Yamamoto, Masanobu; Nomura, Masahiro; Toda, Makoto; Shimada, Taihei; Hara, Keigo; Hasegawa, Katsushi

    2011-08-01

    The 3 GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC) delivers high intensity proton beams to the Materials and Life Science Facility (MLF) and the main ring (MR). The repetition rate of the RCS is 25 Hz. The typical operation period of the J-PARC is 3.2 s, which consists of 80 RCS cycles. Four beam pulses are for the MR and the other pulses are led into the MLF. Since a bucket-to-bucket injection scheme is used for the MR, the beam from the RCS must be injected with a precise phase to the proper rf bucket of the MR. In case of the MLF, the beam has to be synchronized to the Fermi chopper, which has a tolerance of only a few 100 ns. Thus, stable beam timings with a very low jitter are required for both destinations. To realize the stable beam timing, we employ the timing system, which is not synchronized to the AC power line. Also the magnetic-alloy accelerating cavities and the full digital low-level RF control system are the keys for the precise beam phase control. For acceleration of a high power beam, the phase feedback loop, which damps the longitudinal dipole oscillation, is necessary. The phase loop is a cause of the jitter of the beam extraction timing. We apply a gain pattern of the phase loop to avoid the influence on the beam phase at the extraction. We have achieved a very low jitter extraction of a high power beam within 1.7 ns, which corresponds to 1 degree of the rf frequency at the extraction.

  10. Knowledge, Power and Meanings Shaping Quality Assurance in Higher Education: A Systemic Critique

    ERIC Educational Resources Information Center

    Houston, Don; Paewai, Shelley

    2013-01-01

    Internationally, quality assurance schemes persist despite long-standing dissatisfaction and critique of their impact and outcomes. Adopting a critical systems perspective, the article explores the relationships between the knowledge, power and meanings that stakeholder groups bring to the design and implementation of quality assurance systems.…

  11. Effect of the energy-environment simulator on achievement, attitudes, and behavior relative to energy-education concepts systematically replicated in higher education

    SciTech Connect

    Lees, J.R.

    1983-01-01

    This study was a systematic replication of a study by Stagliano (1981). Additional hypotheses concerning pretest, student major, and student section variance were tested. Achievement in energy knowledge and conservation attitudes attained by (a) lecture-discussion enriched with the Energy-Environment Simulator and (b) lecture-discussion methods of instruction were measured. Energy knowledge was measured on the Energy Knowledge Assessment Test (EKAT), and attitudes were measured on the Youth Energy Survey (YES), the Lecture-discussion simulation (LDS) used a two hour out-of-class activity in debriefing. The population consisted of 142 college student volunteers randomly selected, and assigned to one of two groups of 71 students for each treatment. Stagliano used three groups (n = 35), one group receiving an energy-game treatment. Both studies used the pretest-posttest true experimental design. The present study included 28 hypotheses, eight of which were found to be significant. Stagliano used 12 hypotheses, all of which were rejected. The present study hypothesized that students who received the LDS treatment would obtain significantly higher scores on the EKAT and the YES instruments. Results showed that significance was found (alpha level .05) on the EKAT and also found on the YES total subscale when covaried for effects of pretest, student major, and student section. When covarying the effects of pretest scores only, significance was found on the EKAT. All YES hypotheses were rejected.

  12. Electrostatic Energy Harvester Utilizing High Density of Electrode for Higher Output Power

    NASA Astrophysics Data System (ADS)

    Minami, K.; Miwatani, N.; Kanda, K.; Fujita, T.; Maenaka, K.

    2015-12-01

    In this study, we report an improvement of output power from an electret type vibration energy harvester. Typical crossing-area change harvester has a stripe-shaped electret and counter electrode for making the capacitance change. In order to improve space efficiency, the counter electrodes are divided and arraignment with the same pitch of the electret. We investigate that adjoining the counter electrodes, the fringing effect is decreased and the capacitance change between the electrodes is larger than the conventional design from FEM analysis. The output power of 2.5 μW and 5.3 μW are obtained in each kind of counter electrode with the applied acceleration of 3 G at 350 Hz, which is about 2 or 4 times as high as our previous work.

  13. Power and Control: Managing Agents for International Student Recruitment in Higher Education

    ERIC Educational Resources Information Center

    Huang, Iona Yuelu; Raimo, Vincenzo; Humfrey, Christine

    2016-01-01

    This multiple case-based study investigates the relationship between recruiting agents and the UK universities who act as their principals. The current extensive use of agents in UK higher education may be seen as an indicator of the financial impact made by international students. The study analyses the practice of agent management and explores…

  14. Accreditation and Power: A Discourse Analysis of a New Regime of Governance in Higher Education

    ERIC Educational Resources Information Center

    Engebretsen, Eivind; Heggen, Kristin; Eilertsen, Heidi Annett

    2012-01-01

    This article studies discourses within the accreditation of Norwegian higher education conducted by the Norwegian Agency for Quality Assurance in Education (NOKUT), using one concrete case (the accreditation of bachelor programs in nursing). Analysis of policy documents and accreditation reports are influenced by two of Foucault's concepts of…

  15. Space and Power in the Ivory Tower: Decision Making in Public Higher Education

    ERIC Educational Resources Information Center

    Blanchette, Sandra McCoskrie

    2011-01-01

    The challenges of managing physical space in higher education are often left unspoken and under researched. In this multiple case study of three urban universities, decision-making processes are examined with particular attention to who has institutional decision-making authority. Effective and efficient space management is important because the…

  16. Space and Power in the Ivory Tower: Decision Making in Public Higher Education

    ERIC Educational Resources Information Center

    Blanchette, Sandra McCoskrie

    2010-01-01

    The challenges of managing physical space in public higher education are often left unspoken and under researched. In this multiple case study of three urban universities, decision-making processes are examined with particular attention to who has institutional decision-making authority. Effective and efficient space management is important…

  17. Power, Pedagogy and Personalization in Global Higher Education: The Occlusion of Second-Wave Feminism?

    ERIC Educational Resources Information Center

    David, Miriam; Clegg, Sue

    2008-01-01

    In this paper, in keeping with developing feminist methodologies, we reflect on how we became second-wave feminists in the 1970s. We consider how the theories and practices that we were involved in have been changed as the global socio-political context has transformed higher education practices. Second-wave feminism originated as a political…

  18. Gender, Power and Management: A Cross-Cultural Analysis of Higher Education

    ERIC Educational Resources Information Center

    Bagilhole, Barbara, Ed.; White, Kate, Ed.

    2011-01-01

    Women are now part of senior management in higher education (HE) to varying degrees in most countries and actively contribute to the vision and strategic direction of universities. This book attempts to analyse their impact and potential impact on both organisational growth and culture. Contents of this book include: (1) Building a Feminist…

  19. Influence of higher order modes on the beam stability in the high power superconducting proton linac

    NASA Astrophysics Data System (ADS)

    Schuh, Marcel; Gerigk, Frank; Tückmantel, Joachim; Welsch, Carsten P.

    2011-05-01

    Higher order modes (HOMs) can severely limit the operation of superconducting cavities in a linear accelerator with high beam current, high duty factor, and complex pulse structure. The full HOM spectrum has to be analyzed in order to identify potentially dangerous modes already during the design phase and to define their damping requirements. For this purpose a dedicated beam simulation code simulation of higher order mode dynamics (SMD) focused on beam-HOM interaction was developed, taking into account important effects like the HOM frequency spread, beam input jitter, different chopping patterns, as well as klystron and alignment errors. Here, SMD is used to investigate the influence of HOMs in detail in the superconducting proton linac at CERN and their potential to drive beam instabilities in the longitudinal and transverse plane.

  20. Propagation of high power electromagnetic beam in relativistic magnetoplasma: Higher order paraxial ray theory

    NASA Astrophysics Data System (ADS)

    Gill, Tarsem Singh; Kaur, Ravinder; Mahajan, Ranju

    2010-09-01

    This paper presents an analysis of self-consistent, steady-state, theoretical model, which explains the ring formation in a Gaussian electromagnetic beam propagating in a magnetoplasma, characterized by relativistic nonlinearity. Higher order terms (up to r4) in the expansion of the dielectric function and the eikonal have been taken into account. The condition for the formation of a dark and bright ring derived earlier by Misra and Mishra [J. Plasma Phys. 75, 769 (2009)] has been used to study focusing/defocusing of the beam. It is seen that inclusion of higher order terms does significantly affect the dependence of the beam width on the distance of propagation. Further, the effect of the magnetic field and the nature of nonlinearity on the ring formation and self-focusing of the beam have been explored.

  1. Propagation of high power electromagnetic beams in overdense plasmas: Higher order paraxial theory

    SciTech Connect

    Sodha, Mahendra Singh; Faisal, Mohammad

    2008-03-15

    This article presents the paraxial theory of the propagation of an initially Gaussian electromagnetic beam in an inhomogeneous plasma with an overdense region; in contrast to earlier work on penetration in overdense plasma, higher order terms (up to r{sup 4}) in the expansion of the dielectric function and the eikonal have been taken into account. Three types of nonlinearities, viz., collisional, ponderomotive, and relativistic, have been considered. As expected the higher order terms do not affect the critical curves, corresponding to initial propagation without convergence or divergence. It is seen that the inclusion of higher order terms does significantly affect the dependence of the beam width on the distance of propagation. Corresponding to the case of ponderomotive nonlinearity numerical results for the dependence of beam width parameter and the axial dielectric function on the distance of propagation have been presented for specific values of the initial beam width and axial irradiance and specific spatial dependence of the electron density in the absence of the beam. Both the situations, viz., formation of bright or dark rings in the transverse irradiation pattern, have been considered. From a parametric analysis the dependence of the maximum penetration (when the axial dielectric function tends to zero) on the axial irradiance and an inhomogeneity parameter has been graphically illustrated.

  2. Effects of power-law Maxwell field on the critical phenomena of higher dimensional dilaton black holes

    NASA Astrophysics Data System (ADS)

    Mo, Jie-Xiong; Li, Gu-Qiang; Xu, Xiao-Bao

    2016-04-01

    The effects of a power-law Maxwell field on the critical phenomena of higher dimensional dilaton black holes are probed in detail. We successfully derive the analytic solutions of the critical point and carry out some checks to ensure that these critical quantities are positive. It is shown that the constraint on the parameter α describing the strength of the coupling of the electromagnetic field and the scalar field turns out to be 0 <α2<1 , which is tighter than that in the nonextended phase space. It is also shown that these critical quantities and the ratio Pcvc/Tc are affected by the power-law Maxwell field. Moreover, critical exponents are found to coincide with those of other anti-de Sitter black holes, showing the powerful influence of mean field theory.

  3. Simulation of Flow Through Porous Anode in Mfc at Higher Power Density

    NASA Astrophysics Data System (ADS)

    Su, W. W.; Xu, Y. S.; Yan, W. W.; Liu, Y.

    Microbial fuel cell (MFC) is a new environmental friendly energy device which has received greatly attention due to its technology for producing electricity directly from organic or inorganic matter using bacteria as catalyst. To date, many studies have been carried out on advective flow through porous anode in a continuous flow MFC. However, the precise mechanical mechanism of flow through porous anode and the quantified relationship between porous media and MFC performance are not yet clearly understood. It has been found experimentally the power density can be increased apparently at certain spacing configuration. Based on these available experimental data, we studied the effect of spacing between electrodes and the Darcy number of porous anode on the power generation performance of MFC using lattice Boltzmann method. The simulation results indicated that the spacing between electrodes significantly influence the flow velocity profile and residence time in the MFC. Moreover, it was found that the Darcy number of porous anode could regulate the output efficiency of MFC. Our results would be helpful to optimize MFC design.

  4. Study of a Simulation Tool to Determine Achievable Control Dynamics and Control Power Requirements with Perfect Tracking

    NASA Technical Reports Server (NTRS)

    Ostroff, Aaron J.

    1998-01-01

    This paper contains a study of two methods for use in a generic nonlinear simulation tool that could be used to determine achievable control dynamics and control power requirements while performing perfect tracking maneuvers over the entire flight envelope. The two methods are NDI (nonlinear dynamic inversion) and the SOFFT(Stochastic Optimal Feedforward and Feedback Technology) feedforward control structure. Equivalent discrete and continuous SOFFT feedforward controllers have been developed. These equivalent forms clearly show that the closed-loop plant model loop is a plant inversion and is the same as the NDI formulation. The main difference is that the NDI formulation has a closed-loop controller structure whereas SOFFT uses an open-loop command model. Continuous, discrete, and hybrid controller structures have been developed and integrated into the formulation. Linear simulation results show that seven different configurations all give essentially the same response, with the NDI hybrid being slightly different. The SOFFT controller gave better tracking performance compared to the NDI controller when a nonlinear saturation element was added. Future plans include evaluation using a nonlinear simulation.

  5. Design considerations for a higher-order-mode dielectric-loaded power extractor set for millimeter-wave generation.

    SciTech Connect

    Gai, W.; Liu, W.; Gao, F.; Wong, T.; Jing, C.; High Energy Physics; Illinois Inst. of Tech.; Euclid Techlabs LLC

    2009-10-11

    The design of an electron-beam excited device for millimeter-wave generation is presented. Referred to as a dielectric-loaded power extractor, it is based on the higher-order-mode operation of a dielectric-loaded waveguide. With a matching transition, the unit can deliver power to the output waveguide at one of two frequencies, 20.8 and 35.1 GHz, corresponding to the TM{sub 02} and TM{sub 03} modes, respectively. By properly choosing the thickness of the dielectric lining, both modes are tuned to synchronize with an ultra-relativistic electron beam traversing the unit so that the wakefield generated by the beam is excited at these modes, chosen to be at 20.8 and 35.1 GHz, respectively, both corresponding to a harmonic of the 1.3 GHz operating frequency at an accelerator facility. Power generated in the unintended TM{sub 01} mode is effectively suppressed for bunch train operation by a novel technique. The device consists of a dielectric-loaded decelerating structure and two changeable output couplers to deliver the millimeter-wave power to a standard waveguide. For a drive beam with 50 nC of charge per bunch, power levels of 90.4 and 8.68 MW are expected to be delivered by the device at 20.8 and 35.1 GHz, respectively.

  6. If I Read Better, Will I Score Higher ?: The Relationship between Oral Reading Fluency Instruction and Standardized Reading Achievement Test Outcomes

    ERIC Educational Resources Information Center

    Waldron, Chad H.

    2008-01-01

    The research study examined whether a difference existed between the reading achievement scores of an experimental group and a control group in standardized reading achievement. This difference measured the effect of systematic oral reading fluency instruction with repeated readings. Data from the 4Sight Pennsylvania Benchmark Reading Assessments…

  7. Application of power spectrum, cepstrum, higher order spectrum and neural network analyses for induction motor fault diagnosis

    NASA Astrophysics Data System (ADS)

    Liang, B.; Iwnicki, S. D.; Zhao, Y.

    2013-08-01

    The power spectrum is defined as the square of the magnitude of the Fourier transform (FT) of a signal. The advantage of FT analysis is that it allows the decomposition of a signal into individual periodic frequency components and establishes the relative intensity of each component. It is the most commonly used signal processing technique today. If the same principle is applied for the detection of periodicity components in a Fourier spectrum, the process is called the cepstrum analysis. Cepstrum analysis is a very useful tool for detection families of harmonics with uniform spacing or the families of sidebands commonly found in gearbox, bearing and engine vibration fault spectra. Higher order spectra (HOS) (also known as polyspectra) consist of higher order moment of spectra which are able to detect non-linear interactions between frequency components. For HOS, the most commonly used is the bispectrum. The bispectrum is the third-order frequency domain measure, which contains information that standard power spectral analysis techniques cannot provide. It is well known that neural networks can represent complex non-linear relationships, and therefore they are extremely useful for fault identification and classification. This paper presents an application of power spectrum, cepstrum, bispectrum and neural network for fault pattern extraction of induction motors. The potential for using the power spectrum, cepstrum, bispectrum and neural network as a means for differentiating between healthy and faulty induction motor operation is examined. A series of experiments is done and the advantages and disadvantages between them are discussed. It has been found that a combination of power spectrum, cepstrum and bispectrum plus neural network analyses could be a very useful tool for condition monitoring and fault diagnosis of induction motors.

  8. Selection of higher eigenmode amplitude based on dissipated power and virial contrast in bimodal atomic force microscopy

    SciTech Connect

    Diaz, Alfredo J.; Eslami, Babak; López-Guerra, Enrique A.; Solares, Santiago D.

    2014-09-14

    This paper explores the effect of the amplitude ratio of the higher to the fundamental eigenmode in bimodal atomic force microscopy (AFM) on the phase contrast and the dissipated power contrast of the higher eigenmode. We explore the optimization of the amplitude ratio in order to maximize the type of contrast that is most relevant to the particular study. Specifically, we show that the trends in the contrast range behave differently for different quantities, especially the dissipated power and the phase, with the former being more meaningful than the latter (a similar analysis can be carried out using the virial, for which we also provide a brief example). Our work is based on numerical simulations using two different conservative-dissipative tip-sample models, including the standard linear solid and the combination of a dissipation coefficient with a conservative model, as well as experimental images of thin film Nafion{sup ®} proton exchange polymers. We focus on the original bimodal AFM method, where the higher eigenmode is driven with constant amplitude and frequency (i.e., in “open loop”).

  9. Achieving high power efficiency and low roll-off OLEDs based on energy transfer from thermally activated delayed excitons to fluorescent dopants.

    PubMed

    Wang, Shipan; Zhang, Yuewei; Chen, Weiping; Wei, Jinbei; Liu, Yu; Wang, Yue

    2015-08-01

    Achieving high power efficiencies at high-brightness levels is still an important issue for organic light-emitting diodes (OLEDs) based on the thermally activated delayed fluorescence (TADF) mechanism. Herein, enhanced electroluminescence efficiencies were achieved in fluorescent OLEDs using a TADF molecule, (4s,6s)-2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN), as a host and quinacridone derivatives (QA) as fluorescent dopants. PMID:26120606

  10. State Test Score Trends through 2007-08. Part 1: Is the Emphasis on "Proficiency" Shortchanging Higher- and Lower-Achieving Students?

    ERIC Educational Resources Information Center

    Chudowsky, Naomi; Chudowsky, Victor; Kober, Nancy

    2009-01-01

    This report is the first in a series of reports describing results from the Center on Education Policy's (CEP's) third annual analysis of state testing data. The report provides an update on student performance at the proficient level of achievement, and for the first time, includes data about student performance at the advanced and basic levels.…

  11. Education Reform in the Trenches: Increased Academic Course Taking in High Schools with Lower Achieving Students in States with Higher Graduation Requirements.

    ERIC Educational Resources Information Center

    Clune, William H.; White, Paula A.

    1992-01-01

    Transcript data were analyzed to determine changes in course taking among graduates of high schools including mostly lower achieving students in California, Florida, Missouri, and Pennsylvania, which adopted high graduation requirements in the 1980s. Average credits per student increased in all academic subjects, as did the courses' difficulty…

  12. Studies of Several New Modifications of Aggressive Packet Combining to Achieve Higher Throughput, Based on Correction Capability of Disjoint Error Vectors

    NASA Astrophysics Data System (ADS)

    Chakraborty, Swarnendu Kumar; Goswami, Rajat Subhra; Bhunia, Chandan Tilak; Bhunia, Abhinandan

    2016-06-01

    Aggressive packet combining (APC) scheme is well-established in literature. Several modifications were studied earlier for improving throughput. In this paper, three new modifications of APC are proposed. The performance of proposed modified APC is studied by simulation and is reported here. A hybrid scheme is proposed here for getting higher throughput and also the disjoint factor is compared among conventional APC with proposed schemes for getting higher throughput.

  13. A Hierarchical Examination of the Immigrant Achievement Gap: The Additional Explanatory Power of Nationality and Educational Selectivity over Traditional Explorations of Race and Socioeconomic Status

    ERIC Educational Resources Information Center

    Simms, Kathryn

    2012-01-01

    This study compared immigrant and nonimmigrant educational achievement (i.e., the immigrant gap) in math by reexamining the explanatory power of race and socioeconomic status (SES)--two variables, perhaps, most commonly considered in educational research. Four research questions were explored through growth curve modeling, factor analysis, and…

  14. Higher Education in a Global Society Achieving Diversity, Equity and Excellence (Advances in Education in Diverse Communities: Research Policy and Praxis, Volume 5)

    ERIC Educational Resources Information Center

    Elsevier, 2006

    2006-01-01

    The "problem of the 21st century" is rapidly expanding diversity alongside stubbornly persistent status and power inequities by race, ethnicity, gender, class, language, citizenship and region. Extensive technological, economic, political and social changes, along with immigration, combine to produce a global community of great diversity and…

  15. Higher Education in a Global Society Achieving Diversity, Equity and Excellence (Advances in Education in Diverse Communities: Research Policy and Praxis, Volume 5)

    ERIC Educational Resources Information Center

    Elsevier, 2006

    2006-01-01

    The "problem of the 21st century" is rapidly expanding diversity alongside stubbornly persistent status and power inequities by race, ethnicity, gender, class, language, citizenship and region. Extensive technological, economic, political and social changes, along with immigration, combine to produce a global community of great diversity…

  16. Missing in Action: Writing Process-Based Instructional Practices and Measures of Higher-Order Literacy Achievement in Predominantly Urban Elementary Schools

    ERIC Educational Resources Information Center

    Briddell, Andrew

    2013-01-01

    This study of 1,974 fifth grade students investigated potential relationships between writing process-based instruction practices and higher-order thinking measured by a standardized literacy assessment. Writing process is defined as a highly complex, socio-cognitive process that includes: planning, text production, review, metacognition, writing…

  17. The Elephant in the Hall: Motivating the Study of Student Motivation and Self-Regulation in Studies of Academic Achievement and Persistence in Higher Education

    ERIC Educational Resources Information Center

    Kennedy, Gary J.

    2013-01-01

    This essay proposes that much of what constitutes the quality of an institution of higher education is the quality of the students attending the institution. This quality, however, is conceptualized to extend beyond that of academic ability. Specifically, three propositions are considered. First, it is proposed that a core construct of student…

  18. Device-Training for Individuals with Thoracic and Lumbar Spinal Cord Injury Using a Powered Exoskeleton for Technically Assisted Mobility: Achievements and User Satisfaction.

    PubMed

    Platz, Thomas; Gillner, Annett; Borgwaldt, Nicole; Kroll, Sylvia; Roschka, Sybille

    2016-01-01

    Objective. Results of a device-training for nonambulatory individuals with thoracic and lumbar spinal cord injury (SCI) using a powered exoskeleton for technically assisted mobility with regard to the achieved level of control of the system after training, user satisfaction, and effects on quality of life (QoL). Methods. Observational single centre study with a 4-week to 5-week intensive inpatient device-training using a powered exoskeleton (ReWalk™). Results. All 7 individuals with SCI who commenced the device-training completed the course of training and achieved basic competences to use the system, that is, the ability to stand up, sit down, keep balance while standing, and walk indoors, at least with a close contact guard. User satisfaction with the system and device-training was documented for several aspects. The quality of life evaluation (SF-12v2™) indicated that the use of the powered exoskeleton can have positive effects on the perception of individuals with SCI regarding what they can achieve physically. Few adverse events were observed: minor skin lesions and irritations were observed; no falls occurred. Conclusions. The device-training for individuals with thoracic and lumbar SCI was effective and safe. All trained individuals achieved technically assisted mobility with the exoskeleton while still needing a close contact guard. PMID:27610382

  19. Device-Training for Individuals with Thoracic and Lumbar Spinal Cord Injury Using a Powered Exoskeleton for Technically Assisted Mobility: Achievements and User Satisfaction

    PubMed Central

    Gillner, Annett; Borgwaldt, Nicole; Kroll, Sylvia; Roschka, Sybille

    2016-01-01

    Objective. Results of a device-training for nonambulatory individuals with thoracic and lumbar spinal cord injury (SCI) using a powered exoskeleton for technically assisted mobility with regard to the achieved level of control of the system after training, user satisfaction, and effects on quality of life (QoL). Methods. Observational single centre study with a 4-week to 5-week intensive inpatient device-training using a powered exoskeleton (ReWalk™). Results. All 7 individuals with SCI who commenced the device-training completed the course of training and achieved basic competences to use the system, that is, the ability to stand up, sit down, keep balance while standing, and walk indoors, at least with a close contact guard. User satisfaction with the system and device-training was documented for several aspects. The quality of life evaluation (SF-12v2™) indicated that the use of the powered exoskeleton can have positive effects on the perception of individuals with SCI regarding what they can achieve physically. Few adverse events were observed: minor skin lesions and irritations were observed; no falls occurred. Conclusions. The device-training for individuals with thoracic and lumbar SCI was effective and safe. All trained individuals achieved technically assisted mobility with the exoskeleton while still needing a close contact guard. PMID:27610382

  20. Constraining higher-order parameters for primordial non-Gaussianities from power spectra and bispectra of imaging surveys

    NASA Astrophysics Data System (ADS)

    Hashimoto, Ichihiko; Taruya, Atsushi; Matsubara, Takahiko; Namikawa, Toshiya; Yokoyama, Shuichiro

    2016-05-01

    We investigate the statistical power of higher-order statistics and cross-correlation statistics to constrain the primordial non-Gaussianity from the imaging surveys. In particular, we consider the local-type primordial non-Gaussianity and discuss how well one can tightly constrain the higher-order non-Gaussian parameters (gNL and τNL) as well as the leading-order parameter fNL from the halo/galaxy clustering and weak gravitational lensing measurements. Making use of a strong scale-dependent behavior in the galaxy/halo clustering, Fisher matrix analysis reveals that the bispectra can break the degeneracy between non-Gaussian parameters (fNL, gNL and τNL), and this will give simultaneous constraints on those three parameters. The combination of cross-correlation statistics further improves the constraints by a factor of 2. As a result, upcoming imaging surveys like the Large Synoptic Survey Telescope have the potential to improve the constraints on the primordial non-Gaussianity much tighter than those obtained from the CMB measurement by Planck, giving us an opportunity to test the single-sourced consistency relation, τNL≥(36 /25 )fNL2 .

  1. The Power of Graphic Organizers: Effects on Students' Word-Learning and Achievement Emotions in Social Studies

    ERIC Educational Resources Information Center

    Ilter, Ilhan

    2016-01-01

    The purpose of this study was to investigate the effectiveness of three graphic organizers for teaching vocabulary and the development of the emotions-related to achievement. The study focused on the effects of different types of graphic organizers on word-learning and various emotions in social studies. This study was designed as a…

  2. The Power of Community: How Foster Parents, Teachers, and Community Members Support Academic Achievement for Foster Youth

    ERIC Educational Resources Information Center

    Morton, Brenda M.

    2016-01-01

    Foster children have been identified as one of the most high-risk groups for academic failure in schools today. However, a small number of foster youth are beating the odds by achieving academically. How are they able to overcome tremendous barriers and succeed? This phenomenological study reports the findings of former foster youth and their P-12…

  3. Charging a Battery-Powered Device with a Fiber-Optically Connected Photonic Power System for Achieving High-Voltage Isolation

    SciTech Connect

    Lizon, David C; Gioria, Jack G; Dale, Gregory E; Snyder, Hans R

    2008-01-01

    This paper describes the development and testing of a system to provide isolated power to the cathode-subsystem electronics of an x-ray tube. These components are located at the cathode potential of several hundred kilovolts, requiring a supply of power isolated from this high voltage. In this design a fiber-optically connected photonic power system (PPS) is used to recharge a lithium-ion battery pack, which will subsequently supply power to the cathode-subsystem electronics. The suitability of the commercially available JDSU PPS for this application is evaluated. The output of the ppe converter is characterized. The technical aspects of its use for charging a variety of Li-Ion batteries are discussed. Battery charge protection requirements and safety concerns are also addressed.

  4. Many small consumers, one growing problem: Achieving energy savings for electronic equipment operating in low power modes

    SciTech Connect

    Payne, Christopher T.; Meier, Alan K.

    2004-08-24

    An increasing amount of electricity is used by equipment that is neither fully ''on'' nor fully ''off.'' We call these equipment states low power modes, or ''lopomos.'' ''Standby'' and ''sleep'' are the most familiar lopomos, but some new products already have many modes. Lopomos are becoming common in household appliances, safety equipment, and miscellaneous products. Ross and Meier (2000) reports that several international studies have found standby power to be as much as 10 percent of residential energy consumption. Lopomo energy consumption is likely to continue growing rapidly as products with lopomos that use significant amounts of energy penetrate the market. Other sectors such as commercial buildings and industry also have lopomo energy use, perhaps totaling more in aggregate than that of households, but no comprehensive measurements have been made. In this paper, we propose a research agenda for study of lopomo energy consumption. This agenda has been developed with input from over 200 interested parties. Overall, there is consensus that lopomo energy consumption is an important area for research. Many see this as a critical time for addressing lopomo issues. As equipment designs move from the binary ''on/off'' paradigm to one that encompasses multiple power modes, there is a unique opportunity to address the issue of low power mode energy consumption while technology development paths are still flexible.

  5. A comparison of lower and higher LET heavy ion irradiation effects on silicon NPN rf power transistors

    NASA Astrophysics Data System (ADS)

    Bharathi, M. N.; Pushpa, N.; Vinayakprasanna, N. H.; Prakash, A. P. Gnana

    2016-06-01

    The Silicon NPN rf power transistors were irradiated with 180 MeV Au14+ and 150 MeV Ag12+ ions in the dose range of 1 Mrad to 100 Mrad. The SRIM simulation was used to understand the energy loss and range of these ions in the transistor structure. The different electrical parameters such as Gummel characteristics, excess base current (∆IB), dc current gain (hFE), transconductance (gm), displacement damage factor (K) and output characteristics were studied systematically before and after irradiation. These results were compared with lower linear energy transfer (LET) ions such as 50 MeV Li3+, 95 MeV O7+, 100 MeV F8+, 140 MeV Si10+ and 175 MeV Ni13+ ions in the same dose range. The degradation for 180 MeV Au14+ and 150 MeV Ag12+ ion irradiated transistors was significantly more when compared to lower LET ions, indicating that the transistors are vulnerable to higher LET ion irradiations. Isochronal annealing study was conducted on the irradiated transistors to analyze the recovery in different electrical parameters. After isochronal annealing, the recovery in hFE and other electrical parameters was around 67% for Ag12+ ion irradiated transistors and 60% for Au14+ ion irradiated transistors.

  6. Estimation on Achievable Parameter Regime of Warm Dense Matter Generated by Isochoric Heating Discharge using Intense Pulsed Power Generator

    NASA Astrophysics Data System (ADS)

    Hayashi, Ryota; Kashine, Kenji; Tokuchi, Akira; Tamura, Fumihiro; Watabe, Arata; Kudo, Takahiro; Takahashi, Kazumasa; Sasaki, Toru; Kikuchi, Takashi; Aso, Tsukasa; Harada, Nob.; Jiang, Weihua

    2016-03-01

    An evaluation method for warm dense matter (WDM) with similar timescale in inertial confinement fusion (ICF) by isochoric heating using intense pulsed power generator ETIGO-II is considered for evaluating target behavior. The temperature increase of the sample is estimated from the numerical calculation using the measured current. As a result, in the case that the shape of sample is ϕ2 mm x 10 mm and the density is 0.01 times solid density of copper, the temperature of sample increases up to 30000 K. It is expected that the WDM is generated using the proposed method with ICF implosion timescale.

  7. Power in Practice: Adult Education and the Struggle for Knowledge and Power in Society. The Jossey-Bass Higher and Adult Education Series.

    ERIC Educational Resources Information Center

    Cervero, Ronald M.; Wilson, Arthur L.

    This book contains 14 papers on adult education and the struggle for knowledge and power in society. The following papers are included: "At the Heart of Practice: The Struggle for Knowledge and Power" (Ronald M. Cervero, Arthur L. Wilson); "The Power of Economic Globalization: Deskilling Immigrant Women through Training" (Shahrzad Mojab); "Silent…

  8. Attractiveness and School Achievement

    ERIC Educational Resources Information Center

    Salvia, John; And Others

    1977-01-01

    The purpose of this study was to ascertain the relationship between rated attractiveness and two measures of school performance. Attractive children received significantly higher report cards and, to some degree, higher achievement test scores than their unattractive peers. (Author)

  9. Participation in the Green Power Partnership: An Analysis of Higher Education Institutions as Partners in the Program

    ERIC Educational Resources Information Center

    Ghosh, Soma

    2011-01-01

    Purpose: The purpose of this paper is to describe and analyze those US colleges and universities that are participating in the Green Power Partnership (GPP). GPP is a voluntary environmental program initiated by the US Environmental Protection Agency (EPA) in 2001 to help increase the use of green power (electricity produced from solar, wind,…

  10. Power Play: The Dynamics of Power and Interpersonal Communication in Higher Education as Reflected in David Mamet's "Oleanna"

    ERIC Educational Resources Information Center

    Chiaramonte, Peter

    2014-01-01

    David Mamet's play "Oleanna" may be infamous for reasons that do not do justice to the play's real accomplishments. One reason for the controversy is the author's apparent focus on sexual harassment. The play is not about sexual harassment. It is about power. And in particular the power of language to shape relationships…

  11. Re/Thinking Practices of Power: The Discursive Framing of Leadership in "The Chronicle of Higher Education"

    ERIC Educational Resources Information Center

    Allan, Elizabeth J.; Gordon, Suzanne P.; Iverson, Susan V.

    2006-01-01

    This article examines how discourses of leadership reflect and produce particular perceptions about leaders and leadership in higher education. An analysis of 103 articles published by "The Chronicle of Higher Education" between 2002 and 2003 reveal four predominant discourses shaping images of leaders: autonomy, relatedness, masculinity, and…

  12. The AICCC Perspective of Career Management: A Strategy for Personal and Positional Power for Black Women in Higher Education Adminstration.

    ERIC Educational Resources Information Center

    Alexander, Martha A.; Scott, Barbara M.

    Currently, America's racial and ethnic minorities are under-represented in higher education and in almost all occupational fields that require a college education. To investigate the extent to which black females in higher education administration view race as a mediating factor in their career progression, 39 black female administrators in…

  13. Soft Power, University Rankings and Knowledge Production: Distinctions between Hegemony and Self-Determination in Higher Education

    ERIC Educational Resources Information Center

    Lo, William Yat Wai

    2011-01-01

    The purpose of this article is to analyse the nature of the global hegemonies in higher education. While anti-colonial thinkers describe the dominance of the Western paradigm as an oppression of indigenous culture and knowledge and as neo-colonialism in higher education, their arguments lead to such questions as how much self-determination do…

  14. The Online Identity Formation of the Institution of Higher Education: Analysis of Power Relations and Subject Positions

    ERIC Educational Resources Information Center

    Massie, Keith R.

    2011-01-01

    The current study examined over 3000 visual images on the homepages of 234 National University to determine how power relations are depicted. Using a hybrid methodology of grounded theory, critical discursive analysis, and facial prominence scoring, the work culminates in a theory: The (Im)Balanced Theory of College Identity Formation Online. The…

  15. Current Control Method to Achieve Wide-Range Power Driving for Linear Synchronous Motor with Half-Wave-Rectified Self-Excitation

    NASA Astrophysics Data System (ADS)

    Hirayama, Tadashi; Higuchi, Tsuyoshi

    In a previous paper, we proposed a novel linear synchronous motor with half-wave-rectified self-excitation. The long-stator-type linear synchronous motor was built, and its performance was verified by performing experiments. This paper presents a new current control method for the linear synchronous motor for achieving a wide range of speeds and high-power operations. First, we propose the current control method for high-thrust operation in the constant-thrust region. This operation is realized by using a reluctance thrust resulting from the saliency of the linear synchronous motor. Furthermore, we propose a control method that maximizes the ratio of the thrust to the voltage; this method can be used to expand the operating range. Wide-range-speed operation can be achieved by applying this new control method along with field-weakening control. The thrust and operation characteristics of the proposed control methods are estimated by performing experiments and an electric and magnetic coupled analysis.

  16. Phase-matched waveguide four-wave mixing scaled to higher peak powers with large-core-area hollow photonic-crystal fibers.

    PubMed

    Konorov, S O; Serebryannikov, E E; Fedotov, A B; Miles, R B; Zheltikov, A M

    2005-05-01

    Hollow photonic-crystal fibers with large core diameters are shown to allow waveguide nonlinear-optical interactions to be scaled to higher pulse peak powers. Phase-matched four-wave mixing is predicted theoretically and demonstrated experimentally for millijoule nanosecond pulses propagating in a hollow photonic-crystal fiber with a core diameter of about 50 microm , suggesting the way to substantially enhance the efficiency of nonlinear-optical spectral transformations and wave mixing of high-power laser pulses in the gas phase. PMID:16089705

  17. Hill Girls, Consumption Practices, Power, and City Style: Raced and Classed Production of Femininities in a Higher Education Setting

    ERIC Educational Resources Information Center

    Esposito, Jennifer

    2011-01-01

    This study investigated the ways a diverse group of university women in the USA utilised racialised and classed discourses of femininity in the creation of subjectivities. Interview and focus group data were collected over a two-year time period and focused on how women navigated the higher education setting. Two forms of femininity, "Hill girl"…

  18. The Bologna Process as a Hegemonic Tool of Normative Power Europe (NPE): The Case of Chilean and Mexican Higher Education

    ERIC Educational Resources Information Center

    Figueroa, Francis Espinoza

    2010-01-01

    The scenario of Latin America in the higher education area, especially in Chile and Mexico, appears to be significantly affected by some European influences. We can see this by examining the implementation of two "hegemonic tools": the Bologna Process and the Tuning Project. This paper argues that if we analyse the European influences as a…

  19. Identity Matters: The Centrality of "Conferred Identity" as Symbolic Power and Social Capital in Higher Education Mobility

    ERIC Educational Resources Information Center

    Holt, Brenda

    2012-01-01

    Although any "choice" young people make about higher education incorporates a subtle interplay of individual agency, circumstance and social structure, the centrality of identity in such life choices for rural young people cannot be underestimated. Since mobility is an ontological absolute for most rural young people accessing university, it is…

  20. Activities on Realization of High-Power and Steady-State ECRH System and Achievement of High Performance Plasmas in LHD

    SciTech Connect

    Shimozuma, T.; Kubo, S.; Yoshimura, Y.; Igami, H.; Takahashi, H.; Ikeda, R.; Tamura, N.; Kobayashi, S.; Ito, S.; Mizuno, Y.; Takita, Y.; Mutoh, T.; Minami, R.; Kariya, T.; Imai, T.; Idei, H.; Shapiro, M. A.; Temkin, R. J.; Felici, F.; Goodman, T.

    2009-11-26

    Electron Cyclotron Resonance Heating (ECRH) has contributed to the achievement of high performance plasma production, high electron temperature plasmas and sustainment of steady-state plasmas in the Large Helical Device (LHD). Our immediate targets of upgrading the ECRH system are 5 MW several seconds and 1 MW longer than one hour power injection into LHD. The improvement will greatly extend the plasma parameter regime. For that purpose, we have been promoting the development and installation of 77 GHz/1-1.5 MW/several seconds and 0.3 MW/CW gyrotrons in collaboration with University of Tsukuba. The transmission lines are re-examined and improved for high and CW power transmission. In the recent experimental campaign, two 77 GHz gyrotrons were operated. One more gyrotron, which was designed for 1.5 MW/2 s output, was constructed and is tested. We have been promoting to improve total ECRH efficiency for efficient gyrotron-power use and efficient plasma heating, e.g. a new waveguide alignment method and mode-content analysis and the feedback control of the injection polarization. In the last experimental campaign, the 77 GHz gyrotrons were used in combination with the existing 84 GHz range and 168 GHz gyrotrons. Multi-frequency ECRH system is more flexible in plasma heating experiments and diagnostics. A lot of experiments have been performed in relation to high electron temperature plasmas by realization of the core electron-root confinement (CERC), electron cyclotron current drive (ECCD), Electron Bernstein Wave heating, and steady-state plasma sustainment. Some of the experimental results are briefly described.

  1. Observer-based higher order sliding mode control of power factor in three-phase AC/DC converter for hybrid electric vehicle applications

    NASA Astrophysics Data System (ADS)

    Liu, Jianxing; Laghrouche, Salah; Wack, Maxime

    2014-06-01

    In this paper, a full-bridge boost power converter topology is studied for power factor control, using output higher order sliding mode control. The AC/DC converters are used for charging the battery and super-capacitor in hybrid electric vehicles from the utility. The proposed control forces the input currents to track the desired values, which can control the output voltage while keeping the power factor close to one. Super-twisting sliding mode observer is employed to estimate the input currents and load resistance only from the measurement of output voltage. Lyapunov analysis shows the asymptotic convergence of the closed-loop system to zero. Multi-rate simulation illustrates the effectiveness and robustness of the proposed controller in the presence of measurement noise.

  2. Wireless power transfer to a cardiac implant

    NASA Astrophysics Data System (ADS)

    Kim, Sanghoek; Ho, John S.; Chen, Lisa Y.; Poon, Ada S. Y.

    2012-08-01

    We analyze wireless power transfer between a source and a weakly coupled implant on the heart. Numerical studies show that mid-field wireless powering achieves much higher power transfer efficiency than traditional inductively coupled systems. With proper system design, power sufficient to operate typical cardiac implants can be received by millimeter-sized coils.

  3. 940nm QCW diode laser bars with 70% efficiency at 1 kW output power at 203K: analysis of remaining limits and path to higher efficiency and power at 200K and 300K

    NASA Astrophysics Data System (ADS)

    Frevert, C.; Bugge, F.; Knigge, S.; Ginolas, A.; Erbert, G.; Crump, P.

    2016-03-01

    Both high-energy-class laser facilities and commercial high-energy pulsed laser sources require reliable optical pumps with the highest pulse power and electro-optical efficiency. Although commercial quasi-continuous wave (QCW) diode laser bars reach output powers of 300…500 W further improvements are urgently sought to lower the cost per Watt, improve system performance and reduce overall system complexity. Diode laser bars operating at temperatures of around 200 K show significant advances in performance, and are particularly attractive in systems that use cryogenically cooled solid state lasers. We present the latest results on 940 nm, passively cooled, 4 mm long QCW diode bars which operate under pulse conditions of 1.2 ms, 10 Hz at an output power of 1 kW with efficiency of 70% at 203 K: a two-fold increase in power compared to 300 K, without compromising efficiency. We discuss how custom low-temperature design of the vertical layers can mitigate the limiting factors such as series resistance while sustaining high power levels. We then focus on the remaining obstacles to higher efficiency and power, and use a detailed study of multiple vertical structures to demonstrate that the properties of the active region are a major performance limit. Specifically, one key limit to series resistance is transport in the layers around the active region and the differential internal efficiency is closely correlated to the threshold current. Tailoring the barriers around the active region and reducing transparency current density thus promise bars with increased performance at temperatures of 200 K as well as 300 K.

  4. Power electronics for low power arcjets

    NASA Technical Reports Server (NTRS)

    Hamley, John A.; Hill, Gerald M.

    1991-01-01

    In anticipation of the needs of future light-weight low-power spacecraft, arcjet power electronics in the 100- to 400-W operating range were developed. Power topologies similar to those in the higher 2-kW and 5- to 30-kW power range were implemented, including a four-transistor bridge-switching circuit, current-mode pulse-width modulated control, and an output current averaging inductor with an integral pulse generation winding. Reduction of switching transients was accomplished using a low inductance power distribution network, and no passive snubber circuits were necessary for power switch protection. Phase shift control of the power bridge was accomplished using an improved pulse width modulation to phase shift converter circuit. These features, along with conservative magnetics designs, allowed power conversion efficiencies of greater than 92.5 percent to be achieved into resistive loads over the entire operating range of the converter.

  5. Achieving All Our Ambitions

    ERIC Educational Resources Information Center

    Hartley, Tricia

    2009-01-01

    National learning and skills policy aims both to build economic prosperity and to achieve social justice. Participation in higher education (HE) has the potential to contribute substantially to both aims. That is why the Campaign for Learning has supported the ambition to increase the proportion of the working-age population with a Level 4…

  6. Advancing Student Achievement

    ERIC Educational Resources Information Center

    Walberg, Herbert J.

    2010-01-01

    For the last half century, higher spending and many modern reforms have failed to raise the achievement of students in the United States to the levels of other economically advanced countries. A possible explanation, says Herbert Walberg, is that much current education theory is ill informed about scientific psychology, often drawing on fads and…

  7. Theoretical explanation of the polarization-converting system achieved by beam shaping and combination technique and its performance under high power conditions

    NASA Astrophysics Data System (ADS)

    Wang, Peng; Li, Xiao; Shang, YaPing; Xu, XiaoJun

    2015-10-01

    The fiber laser has very obvious advantages and broad applications in remote welding, 3D cutting and national defense compared with the traditional solid laser. But influenced by heat effect of gain medium, nonlinear effect, stress birefringence effect and other negative factors, it's very difficult to get high power linearly polarized laser just using a single laser. For these limitations a polarization-converting system is designed using beam shaping and combination technique which is able to transform naturally polarized laser to linearly polarized laser at real time to resolve difficulties of generating high-power linearly polarized laser from fiber lasers in this paper. The principle of the Gaussian beam changing into the hollow beam passing through two axicons and the combination of the Gaussian beam and the hollow beam is discussed. In the experimental verification the energy conversion efficiency reached 93.1% with a remarkable enhancement of the extinction ratio from 3% to 98% benefited from the high conversion efficiency of axicons and the system worked fine under high power conditions. The system also kept excellent far field divergence. The experiment phenomenon also agreed with the simulation quite well. The experiment proves that this polarization-converting system will not affect laser structure which controls easily and needs no feedback and controlling system with stable and reliable properties at the same time. It can absolutely be applied to the polarization-conversion of high power laser.

  8. Optimization of self-coherent reflective PON to achieve a new record 42 dB ODN power budget after 100 km at 1.25 Gbps.

    PubMed

    Straullu, S; Forghieri, F; Ferrero, V; Gaudino, R

    2012-12-31

    We demonstrate a greater than 42 dB optical distribution network power budget in the upstream of a 1.25 Gbps self-coherent reflective PON after 100 km of installed fibers, using off-the-shelf optoelectronic components, improving our previous result by 4 dB. We discuss all system optimizations introduced in the setup in order to reach such a result, including 8B/10B high-pass filtering and Faraday rotation at the ONU. PMID:23388785

  9. [Deregulation and Higher Education].

    ERIC Educational Resources Information Center

    Business Officer, 1982

    1982-01-01

    The extent to which the Reagan Administration has achieved its deregulation goals in the area of higher education is addressed in three articles: "Deregulation and Higher Education: The View a Year Later" (Sheldon Elliot Steinbach); "Student Financial Aid Deregulation: Rhetoric or Reality?" (Robin E. Jenkins); and "Administration Reform of Civil…

  10. Investigation of 4H-SiC insulated-gate bipolar transistor turn-off performance for achieving low power loss

    NASA Astrophysics Data System (ADS)

    Navarro, Dondee; Pesic, Iliya; Morikawa, Yoji; Furui, Yoshiharu; Miura-Mattausch, Mitiko

    2016-04-01

    The dynamic characteristics of a 4H-SiC insulated-gate bipolar transistor (IGBT) at pulse switching is investigated by incorporating reported measurements of the interface defect density to device simulation. Different trap features such as energy states and trap time constants are investigated to determine the influence of traps on circuit performance. The capture cross-section parameter used in the simulation depicts the probability of traps to trap/detrap carriers which relates to the carrier trap time constant. It is demonstrated that trapped carriers from the on-state condition cause enhanced generation current during the off-state condition, which give rise to undesired leakage current in addition to the threshold voltage shift previously reported. The device power dissipation is increased by a factor of 100 due to the defects.

  11. Achieving quasi-adiabatic thermal environment to maximize resolution power in very high-pressure liquid chromatography: Theory, models, and experiments.

    PubMed

    Gritti, Fabrice; Gilar, Martin; Jarrell, Joseph A

    2016-04-29

    A cylindrical vacuum chamber (inner diameter 5 cm) housing a narrow-bore 2.1 mm×100 mm column packed with 1.8 μm HSS-T3 fully porous particles was built in order to isolate thermally the chromatographic column from the external air environment. Consistent with statistical physics and the mean free path of air molecules, the experimental results show that natural air convection and conduction are fully eliminated for housing air pressures smaller than 10(-4) Torr. Heat radiation is minimized by wrapping up the column with low-emissivity aluminum-tape (emissivity coefficient ϵ=0.03 vs. 0.28 for polished stainless steel 316). Overall, the heat flux at the column wall is reduced by 96% with respect to standard still-air ovens. From a practical viewpoint, the efficiency of the column run at a flow rate of 0.6 mL/min at a constant 13,000 psi pressure drop (the viscous heat power is around 9 W/m) is improved by up to 35% irrespective of the analyte retention. Models of heat and mass transfer reveal that (1) the amplitude of the radial temperature gradient is significantly reduced from 0.30 to 0.01 K and (2) the observed improvement in resolution power stems from a more uniform distribution of the flow velocity across the column diameter. The eddy dispersion term in the van Deemter equation is reduced by 0.8±0.1 reduced plate height unit, a significant gain in column performance. PMID:27040511

  12. In Defence of International Comparative Studies. on the Analytical and Explanatory Power of the Nation State in International Comparative Higher Education Research

    ERIC Educational Resources Information Center

    Kosmützky, Anna

    2015-01-01

    Higher education is undergoing a process of globalization and new realities of a globalized higher education world are emerging. Globalization also has a profound impact on higher education research. Global and transnational topics are theoretically and empirically elaborated and seem on the rise, whereas the international comparative outlook…

  13. Higher Dimensional Gaussian-Type Solitons of Nonlinear Schrödinger Equation with Cubic and Power-Law Nonlinearities in PT-Symmetric Potentials

    PubMed Central

    Chen, Yi-Xiang; Xu, Fang-Qian

    2014-01-01

    Two families of Gaussian-type soliton solutions of the (n+1)-dimensional Schrödinger equation with cubic and power-law nonlinearities in -symmetric potentials are analytically derived. As an example, we discuss some dynamical behaviors of two dimensional soliton solutions. Their phase switches, powers and transverse power-flow densities are discussed. Results imply that the powers flow and exchange from the gain toward the loss regions in the cell. Moreover, the linear stability analysis and the direct numerical simulation are carried out, which indicates that spatial Gaussian-type soliton solutions are stable below some thresholds for the imaginary part of -symmetric potentials in the defocusing cubic and focusing power-law nonlinear medium, while they are always unstable for all parameters in other media. PMID:25542020

  14. Parental Involvement and Academic Achievement

    ERIC Educational Resources Information Center

    Goodwin, Sarah Christine

    2015-01-01

    This research study examined the correlation between student achievement and parent's perceptions of their involvement in their child's schooling. Parent participants completed the Parent Involvement Project Parent Questionnaire. Results slightly indicated parents of students with higher level of achievement perceived less demand or invitations…

  15. Some methods for achieving more efficient performance of fuel assemblies

    NASA Astrophysics Data System (ADS)

    Boltenko, E. A.

    2014-07-01

    More efficient operation of reactor plant fuel assemblies can be achieved through the use of new technical solutions aimed at obtaining more uniform distribution of coolant over the fuel assembly section, more intense heat removal on convex heat-transfer surfaces, and higher values of departure from nucleate boiling ratio (DNBR). Technical solutions using which it is possible to obtain more intense heat removal on convex heat-transfer surfaces and higher DNBR values in reactor plant fuel assemblies are considered. An alternative heat removal arrangement is described using which it is possible to obtain a significantly higher power density in a reactor plant and essentially lower maximal fuel rod temperature.

  16. Measuring and Recording Student Achievement

    ERIC Educational Resources Information Center

    Universities UK, 2004

    2004-01-01

    The Measuring and Recording Student Achievement Scoping Group was established by Universities UK and the Standing Conference of Principals (SCOP), with the support of the Higher Education Funding Council for England (HEFCE) in October 2003 to review the recommendations from the UK Government White Paper "The Future of Higher Education" relating…

  17. Sharing Leadership Responsibilities Results in Achievement Gains

    ERIC Educational Resources Information Center

    Armistead, Lew

    2010-01-01

    Collective, not individual, leadership in schools has a greater impact on student achievement; when principals and teachers share leadership responsibilities, student achievement is higher; and schools having high student achievement also display a vision for student achievement and teacher growth. Those are just a few of the insights into school…

  18. Graded Achievement, Tested Achievement, and Validity

    ERIC Educational Resources Information Center

    Brookhart, Susan M.

    2015-01-01

    Twenty-eight studies of grades, over a century, were reviewed using the argument-based approach to validity suggested by Kane as a theoretical framework. The review draws conclusions about the meaning of graded achievement, its relation to tested achievement, and changes in the construct of graded achievement over time. "Graded…

  19. Higher Education.

    ERIC Educational Resources Information Center

    Hendrickson, Robert M.; Gregory, Dennis E.

    Decisions made by federal and state courts during 1983 concerning higher education are reported in this chapter. Issues of employment and the treatment of students underlay the bulk of the litigation. Specific topics addressed in these and other cases included federal authority to enforce regulations against age discrimination and to revoke an…

  20. Higher Education.

    ERIC Educational Resources Information Center

    Hendrickson, Robert M.

    Litigation in 1987 was very brisk with an increase in the number of higher education cases reviewed. Cases discussed in this chapter are organized under four major topics: (1) intergovernmental relations; (2) employees, involving discrimination claims, tenured and nontenured faculty, collective bargaining and denial of employee benefits; (3)…

  1. Higher Education.

    ERIC Educational Resources Information Center

    Hendrickson, Robert M.; Finnegan, Dorothy E.

    The higher education case law in 1988 is extensive. Cases discussed in this chapter are organized under five major topics: (1) intergovernmental relations; (2) employees, involving discrimination claims, tenured and nontenured faculty, collective bargaining, and denial of employee benefits; (3) students, involving admissions, financial aid, First…

  2. Higher Education.

    ERIC Educational Resources Information Center

    Hendrickson, Robert M.

    This eighth chapter of "The Yearbook of School Law, 1986" summarizes and analyzes over 330 state and federal court cases litigated in 1985 in which institutions of higher education were involved. Among the topics examined were relationships between postsecondary institutions and various governmental agencies; discrimination in the employment of…

  3. Achieving Communicative Competence: The Role of Higher Education.

    ERIC Educational Resources Information Center

    Fatt, James Poon Teng

    1991-01-01

    A study investigated the communicative competencies required in English as a Second Language (ESL) by 200 business and accounting students at Nanyang Technological Institute (Singapore) and explored a communicatively based ESL curriculum design. Student attitudes about the current linguistically based ESL program were also examined. Results are…

  4. Time Management and Academic Achievement of Higher Secondary Students

    ERIC Educational Resources Information Center

    Cyril, A. Vences

    2015-01-01

    The only thing, which can't be changed by man, is time. One cannot get back time lost or gone Nothing can be substituted for time. Time management is actually self management. The skills that people need to manage others are the same skills that are required to manage themselves. The purpose of the present study was to explore the relation between…

  5. Higher Order Thinking Skills: Challenging All Students to Achieve

    ERIC Educational Resources Information Center

    Williams, R. Bruce

    2007-01-01

    Explicit instruction in thinking skills must be a priority goal of all teachers. In this book, the author presents a framework of the five Rs: Relevancy, Richness, Relatedness, Rigor, and Recursiveness. The framework serves to illuminate instruction in critical and creative thinking skills for K-12 teachers across content areas. Each chapter…

  6. Middle Grades: Quality Teaching Equals Higher Student Achievement. Research Brief

    ERIC Educational Resources Information Center

    Bottoms, Gene; Hertl, Jordan; Mollette, Melinda; Patterson, Lenora

    2014-01-01

    The middles grades are critical to public school systems and our nation's economy. It's the make-or-break point in students' futures. Studies repeatedly show when students are not engaged and lose interest in the middle grades, they are likely to fall behind in ninth grade and later drop out of school. When this happens, the workforce suffers, and…

  7. Attribution theory in science achievement

    NASA Astrophysics Data System (ADS)

    Craig, Martin

    Recent research reveals consistent lags in American students' science achievement scores. Not only are the scores lower in the United States compared to other developed nations, but even within the United States, too many students are well below science proficiency scores for their grade levels. The current research addresses this problem by examining potential malleable factors that may predict science achievement in twelfth graders using 2009 data from the National Assessment of Educational Progress (NAEP). Principle component factor analysis was conducted to determine the specific items that contribute to each overall factor. A series of multiple regressions were then analyzed and formed the predictive value of each of these factors for science achievement. All significant factors were ultimately examined together (also using multiple regression) to determine the most powerful predictors of science achievement, identifying factors that predict science achievement, the results of which suggested interventions to strengthen students' science achievement scores and encourage persistence in the sciences at the college level and beyond. Although there is a variety of research highlighting how students in the US are falling behind other developing nations in science and math achievement, as yet, little research has addressed ways of intervening to address this gap. The current research is a starting point, seeking to identify malleable factors that contribute to science achievement. More specifically, this research examined the types of attributions that predict science achievement in twelfth grade students.

  8. The KhoeSan Early Learning Center Pilot Project: Negotiating Power and Possibility in a South African Institute of Higher Learning

    ERIC Educational Resources Information Center

    De Wet, Priscilla

    2011-01-01

    As we search for a new paradigm in post-apartheid South Africa, the knowledge base and worldview of the KhoeSan first Indigenous peoples is largely missing. The South African government has established various mechanisms as agents for social change. Institutions of higher learning have implemented transformation programs. KhoeSan peoples, however,…

  9. Unlocking the Transformational Power of Continuing Education. Proceedings of the Annual Meeting of the Association for Continuing Higher Education (71st, Philadelphia, Pennsylvania, November 15-18, 2009)

    ERIC Educational Resources Information Center

    Jerman, Jerry, Ed.

    2009-01-01

    The 2009 proceedings of the Association for Continuing Higher Education represent the professional presentations of the keynote sessions, the concurrent sessions, and the business meeting of the association's 71st annual conference, held at the Sheraton Society Hill Hotel in Philadelphia on November 15-18, 2009. The conference provided an engaging…

  10. Power electronics for low power arcjets

    NASA Technical Reports Server (NTRS)

    Hamley, John A.; Hill, Gerald M.

    1991-01-01

    In anticipation of the needs of future light-weight, low-power spacecraft, arcjet power electronics in the 100 to 400 W operating range were developed. Limited spacecraft power and thermal control capacity of these small spacecraft emphasized the need for high efficiency. Power topologies similar to those in the higher 2 kW and 5 to 30 kW power range were implemented, including a four transistor bridge switching circuit, current mode pulse-width modulated control, and an output current averaging inductor with an integral pulse generation winding. Reduction of switching transients was accomplished using a low inductance power distribution network, and no passive snubber circuits were necessary for power switch protection. Phase shift control of the power bridge was accomplished using an improved pulse width modulation to phase shift converter circuit. These features, along with conservative magnetics designs allowed power conversion efficiencies of greater than 92.5 percent to be achieved into resistive loads over the entire operating range of the converter. Electromagnetic compatibility requirements were not considered in this work, and control power for the converter was derived from AC mains. Addition of input filters and control power converters would result in an efficiency of on the order of 90 percent for a flight unit. Due to the developmental nature of arcjet systems at this power level, the exact nature of the thruster/power processor interface was not quantified. Output regulation and current ripple requirements of 1 and 20 percent respectively, as well as starting techniques, were derived from the characteristics of the 2 kW system but an open circuit voltage in excess of 175 V was specified. Arcjet integration tests were performed, resulting in successful starts and stable arcjet operation at power levels as low as 240 W with simulated hydrazine propellants.

  11. Taking qPCR to a higher level: Analysis of CNV reveals the power of high throughput qPCR to enhance quantitative resolution.

    PubMed

    Weaver, Suzanne; Dube, Simant; Mir, Alain; Qin, Jian; Sun, Gang; Ramakrishnan, Ramesh; Jones, Robert C; Livak, Kenneth J

    2010-04-01

    This paper assesses the quantitative resolution of qPCR using copy number variation (CNV) as a paradigm. An error model is developed for real-time qPCR data showing how the precision of CNV determination varies with the number of replicates. Using samples with varying numbers of X chromosomes, experimental data demonstrates that real-time qPCR can readily distinguish four copes from five copies, which corresponds to a 1.25-fold difference in relative quantity. Digital PCR is considered as an alternative form of qPCR. For digital PCR, an error model is shown that relates the precision of CNV determination to the number of reaction chambers. The quantitative capability of digital PCR is illustrated with an experiment distinguishing four and five copies of the human gene MRGPRX1. For either real-time qPCR or digital PCR, practical application of these models to achieve enhanced quantitative resolution requires use of a high throughput PCR platform that can simultaneously perform thousands of reactions. Comparing the two methods, real-time qPCR has the advantage of throughput and digital PCR has the advantage of simplicity in terms of the assumptions made for data analysis. PMID:20079846

  12. Operation of higher harmonic oscillations in free-electron lasers.

    PubMed

    Sei, N; Ogawa, H; Yamada, K

    2012-01-01

    We report for the first time the experimental achievement of a seventh-harmonic free-electron laser (FEL) oscillation. The measured FEL gains and average FEL powers for higher harmonics were identical to those calculated by a one-dimensional FEL theory. The measured linewidths of the higher-harmonic FELs were narrower than that of the fundamental FEL owing to the narrower spectral widths of the spontaneous emissions. By applying the higher-harmonic FEL oscillation to a resonator-type FEL with an advanced accelerator, an x-ray FEL oscillator can be realized at lower electron-beam energy. PMID:22274354

  13. Achieving energy efficiency during collective communications

    SciTech Connect

    Sundriyal, Vaibhav; Sosonkina, Masha; Zhang, Zhao

    2012-09-13

    Energy consumption has become a major design constraint in modern computing systems. With the advent of petaflops architectures, power-efficient software stacks have become imperative for scalability. Techniques such as dynamic voltage and frequency scaling (called DVFS) and CPU clock modulation (called throttling) are often used to reduce the power consumption of the compute nodes. To avoid significant performance losses, these techniques should be used judiciously during parallel application execution. For example, its communication phases may be good candidates to apply the DVFS and CPU throttling without incurring a considerable performance loss. They are often considered as indivisible operations although little attention is being devoted to the energy saving potential of their algorithmic steps. In this work, two important collective communication operations, all-to-all and allgather, are investigated as to their augmentation with energy saving strategies on the per-call basis. The experiments prove the viability of such a fine-grain approach. They also validate a theoretical power consumption estimate for multicore nodes proposed here. While keeping the performance loss low, the obtained energy savings were always significantly higher than those achieved when DVFS or throttling were switched on across the entire application run

  14. What Works Clearinghouse Quick Review: "KIPP Middle Schools: Impacts on Achievement and Other Outcomes, Final Report"

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2013

    2013-01-01

    This study examined whether attending a Knowledge is Power Program (KIPP) middle school improved students' reading, math, social studies, and science achievement for up to 4 years following enrollment. The study reported that students attending KIPP middle schools scored statistically significantly higher than matched students on all of the state…

  15. Comparing Science Achievement Constructs: Targeted and Achieved

    ERIC Educational Resources Information Center

    Ferrara, Steve; Duncan, Teresa

    2011-01-01

    This article illustrates how test specifications based solely on academic content standards, without attention to other cognitive skills and item response demands, can fall short of their targeted constructs. First, the authors inductively describe the science achievement construct represented by a statewide sixth-grade science proficiency test.…

  16. Varieties of Achievement Motivation.

    ERIC Educational Resources Information Center

    Kukla, Andre; Scher, Hal

    1986-01-01

    A recent article by Nicholls on achievement motivation is criticized on three points: (1) definitions of achievement motives are ambiguous; (2) behavioral consequences predicted do not follow from explicit theoretical assumptions; and (3) Nicholls's account of the relation between his theory and other achievement theories is factually incorrect.…

  17. Motivation and School Achievement.

    ERIC Educational Resources Information Center

    Maehr, Martin L.; Archer, Jennifer

    Addressing the question, "What can be done to promote school achievement?", this paper summarizes the literature on motivation relating to classroom achievement and school effectiveness. Particular attention is given to how values, ideology, and various cultural patterns impinge on classroom performance and serve to enhance motivation to achieve.…

  18. Mobility and Reading Achievement.

    ERIC Educational Resources Information Center

    Waters, Theresa Z.

    A study examined the effect of geographic mobility on elementary school students' achievement. Although such mobility, which requires students to make multiple moves among schools, can have a negative impact on academic achievement, the hypothesis for the study was that it was not a determining factor in reading achievement test scores. Subjects…

  19. PASS and Reading Achievement.

    ERIC Educational Resources Information Center

    Kirby, John R.

    Two studies examined the effectiveness of the PASS (Planning, Attention, Simultaneous, and Successive cognitive processes) theory of intelligence in predicting reading achievement scores of normally achieving children and distinguishing children with reading disabilities from normally achieving children. The first study dealt with predicting…

  20. Strategic Planning for Higher Education.

    ERIC Educational Resources Information Center

    Kotler, Philip; Murphy, Patrick E.

    1981-01-01

    The framework necessary for achieving a strategic planning posture in higher education is outlined. The most important benefit of strategic planning for higher education decision makers is that it forces them to undertake a more market-oriented and systematic approach to long- range planning. (Author/MLW)

  1. Compensation in Higher Education. ERIC/Higher Education Research Currents.

    ERIC Educational Resources Information Center

    Trivett, David A.

    Compensation in higher education is an inclusive term, since all the benefits associated with teaching, research, work with people, and work with knowledge might be included. But in terms of purchasing power it appears that compensation for work in higher education has lost ground against inflation. In contrast, wage and salary earners in many…

  2. Metabolism A higher power for insulin

    NASA Astrophysics Data System (ADS)

    Gribble, Fiona M.

    2005-04-01

    Glucose output from the liver is tightly regulated by insulin. But insulin holds sway over more than the liver - an unappreciated circuit in glucose control involves the opening of ion channels in the brain.

  3. Space power by ground-based laser transmission

    NASA Technical Reports Server (NTRS)

    Landis, Geoffrey A.

    1992-01-01

    A new method for providing power to space vehicles consists of using high-power CW lasers on the ground to beam power to photovoltaic receivers in space. Such large lasers could be located at cloud-free sites at one or more ground locations, and use large mirrors with adaptive optical correction to reduce the beam spread due to diffraction or atmospheric turbulence. This can result in lower requirements for battery storage, due to continuous illumination of arrays even during periods of shadow by the earth, and higher power output, due to the higher efficiency of photovoltaic arrays under laser illumination compared to solar and the ability to achieve higher intensities of illumination. Applications include providing power for satellites during eclipse, providing power to resurrect satellites which are failing due to solar array degradation, powering orbital transfer vehicles or lunar transfer shuttles, and providing night power to a solar array on the moon.

  4. High Efficiency Microwave Power Amplifier: From the Lab to Industry

    NASA Technical Reports Server (NTRS)

    Sims, William Herbert, III; Bell, Joseph L. (Technical Monitor)

    2001-01-01

    Since the beginnings of space travel, various microwave power amplifier designs have been employed. These included Class-A, -B, and -C bias arrangements. However, shared limitation of these topologies is the inherent high total consumption of input power associated with the generation of radio frequency (RF)/microwave power. The power amplifier has always been the largest drain for the limited available power on the spacecraft. Typically, the conversion efficiency of a microwave power amplifier is 10 to 20%. For a typical microwave power amplifier of 20 watts, input DC power of at least 100 watts is required. Such a large demand for input power suggests that a better method of RF/microwave power generation is required. The price paid for using a linear amplifier where high linearity is unnecessary includes higher initial and operating costs, lower DC-to-RF conversion efficiency, high power consumption, higher power dissipation and the accompanying need for higher capacity heat removal means, and an amplifier that is more prone to parasitic oscillation. The first use of a higher efficiency mode of power generation was described by Baxandall in 1959. This higher efficiency mode, Class-D, is achieved through distinct switching techniques to reduce the power losses associated with switching, conduction, and gate drive losses of a given transistor.

  5. Heritability of Creative Achievement

    ERIC Educational Resources Information Center

    Piffer, Davide; Hur, Yoon-Mi

    2014-01-01

    Although creative achievement is a subject of much attention to lay people, the origin of individual differences in creative accomplishments remain poorly understood. This study examined genetic and environmental influences on creative achievement in an adult sample of 338 twins (mean age = 26.3 years; SD = 6.6 years). Twins completed the Creative…

  6. Confronting the Achievement Gap

    ERIC Educational Resources Information Center

    Gardner, David

    2007-01-01

    This article talks about the large achievement gap between children of color and their white peers. The reasons for the achievement gap are varied. First, many urban minorities come from a background of poverty. One of the detrimental effects of growing up in poverty is receiving inadequate nourishment at a time when bodies and brains are rapidly…

  7. States Address Achievement Gaps.

    ERIC Educational Resources Information Center

    Christie, Kathy

    2002-01-01

    Summarizes 2 state initiatives to address the achievement gap: North Carolina's report by the Advisory Commission on Raising Achievement and Closing Gaps, containing an 11-point strategy, and Kentucky's legislation putting in place 10 specific processes. The North Carolina report is available at www.dpi.state.nc.us.closingthegap; Kentucky's…

  8. Wechsler Individual Achievement Test.

    ERIC Educational Resources Information Center

    Taylor, Ronald L.

    1999-01-01

    This article describes the Wechsler Individual Achievement Test, a comprehensive measure of achievement for individuals in grades K-12. Eight subtests assess mathematics reasoning, spelling, reading comprehension, numerical operations, listening comprehension, oral expression, and written expression. Its administration, standardization,…

  9. Inverting the Achievement Pyramid

    ERIC Educational Resources Information Center

    White-Hood, Marian; Shindel, Melissa

    2006-01-01

    Attempting to invert the pyramid to improve student achievement and increase all students' chances for success is not a new endeavor. For decades, educators have strategized, formed think tanks, and developed school improvement teams to find better ways to improve the achievement of all students. Currently, the No Child Left Behind Act (NCLB) is…

  10. Achievement Test Program.

    ERIC Educational Resources Information Center

    Ohio State Dept. of Education, Columbus. Trade and Industrial Education Service.

    The Ohio Trade and Industrial Education Achievement Test battery is comprised of seven basic achievement tests: Machine Trades, Automotive Mechanics, Basic Electricity, Basic Electronics, Mechanical Drafting, Printing, and Sheet Metal. The tests were developed by subject matter committees and specialists in testing and research. The Ohio Trade and…

  11. General Achievement Trends: Maryland

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  12. General Achievement Trends: Arkansas

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  13. General Achievement Trends: Idaho

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  14. General Achievement Trends: Nebraska

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  15. General Achievement Trends: Colorado

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  16. General Achievement Trends: Iowa

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  17. General Achievement Trends: Hawaii

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  18. General Achievement Trends: Kentucky

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  19. General Achievement Trends: Florida

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  20. General Achievement Trends: Texas

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  1. General Achievement Trends: Oregon

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  2. General Achievement Trends: Virginia

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  3. Honoring Student Achievement

    ERIC Educational Resources Information Center

    Education Digest: Essential Readings Condensed for Quick Review, 2004

    2004-01-01

    Is the concept of "honor roll" obsolete? The honor roll has always been a way for schools to recognize the academic achievement of their students. But does it motivate students? In this article, several elementary school principals share their views about honoring student achievement. Among others, Virginia principal Nancy Moga said that students…

  4. Aiming at Achievement.

    ERIC Educational Resources Information Center

    Martinez, Paul

    The Raising Quality and Achievement Program is a 3-year initiative to support further education (FE) colleges in the United Kingdom in their drive to improve students' achievement and the quality of provision. The program offers the following: (1) quality information and advice; (2) onsite support for individual colleges; (3) help with…

  5. Achieving Perspective Transformation.

    ERIC Educational Resources Information Center

    Nowak, Jens

    Perspective transformation is a consciously achieved state in which the individual's perspective on life is transformed. The new perspective serves as a vantage point for life's actions and interactions, affecting the way life is lived. Three conditions are basic to achieving perspective transformation: (1) "feeling" experience, i.e., getting in…

  6. Achieving Public Schools

    ERIC Educational Resources Information Center

    Abowitz, Kathleen Knight

    2011-01-01

    Public schools are functionally provided through structural arrangements such as government funding, but public schools are achieved in substance, in part, through local governance. In this essay, Kathleen Knight Abowitz explains the bifocal nature of achieving public schools; that is, that schools are both subject to the unitary Public compact of…

  7. General Achievement Trends: Tennessee

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  8. Achievement-Based Resourcing.

    ERIC Educational Resources Information Center

    Fletcher, Mike; And Others

    1992-01-01

    This collection of seven articles examines achievement-based resourcing (ABR), the concept that the funding of educational institutions should be linked to their success in promoting student achievement, with a focus on the application of ABR to postsecondary education in the United Kingdom. The articles include: (1) "Introduction" (Mick…

  9. High Density Power Converters for Photovoltaic Power Management

    NASA Astrophysics Data System (ADS)

    Sangwan, Rahul

    In typical photovoltaic systems, PV cells are connected in series to achieve high output voltages, which decreases conduction losses and helps the downstream power electronics operate at higher efficiencies. A series connection means that the current through the string is limited by the worst case cell, substring, or module, which can result in suboptimal operation of the rest of the string. Given how even small shading can have a large effect on performance, there has been growing interest in the use of distributed power management architectures to mitigate losses from variation in PV systems. In particular, partial power processing converters have gained traction as a means to improve the performance of PV arrays with small, distributed converters that configure in parallel with PV cells. These converters can use low voltage components, only process a fraction of the total power allowing them to achieve higher efficiencies and power density and also have higher reliability. This work details the design and operation of a partial power processing converter implemented as a Resonant Switched Capacitor (ReSC) converter. An integrated circuit (IC) is designed in 0.18 mum CMOS process. Operation at high frequencies (20-50 MHz) allows high levels of integration with air core inductors directly attached to the die through a gold bump, solder reflow process. Test results for the IC are presented with power density and efficiency metrics. The IC is then used as a partial power processing converter to implement equalization with a specially constructed PV panel. The converter is shown to mitigate power loss due to mismatch.

  10. Achieving Symmetry with Polar Direct Drive

    NASA Astrophysics Data System (ADS)

    Krasheninnikova, N.; Murphy, T.; Cobble, J.; Tregillis, I.; Bradley, P.; Hakel, P.; Hsu, S.; Kyrala, G.; Obrey, K.; Schmitt, M.; Kanzleiter, R.; Baumgaertel, J.; Batha, S.

    2014-10-01

    Direct Drive, widely used on Omega, provides high coupling energy and core temperatures per drive. NIF's much higher power offers a prospect for attaining hotter, larger cores enabling higher fidelity burn experiments. To use Omega's knowledge on NIF involves understanding the differences between PDD and SDD. Achieving symmetric implosions in PDD is essential for attaining high temperatures and neutron yields. LANL team tested laser cone-power tuning designs done with rad-hydro code HYDRA utilizing a flux-limited heat conduction (FLHC) model on NIF and Omega. Both campaigns produced symmetric implosions in PDD configuration. Omega campaign confirmed P2 tunability that was in agreement with the simulations, while in experiments on NIF |P2| < 3% was sustained for 100's ps at NBT (similar to indirect drive and SDD). However, we need to recognize the role of LPI effects which are often left out in simulations. We found that when I > 1015W/cm2 on NIF, FLHC model in HYDRA was insufficient to accurately predict symmetry, bright equatorial self-emission band, and enhanced hot electron population. We were able to account for these effects by including CBET and non-local heat transfer models. Here we present out analysis of PDD symmetry data. We report on hot electron and CBET effects and assess our ability to model them with rad-hydro codes. We will also discuss laser intensity limits in PDD. Work performed by LANL under Contract DE-AC52-06NA25396 for the National Nuclear Security Administration of the USDoE.

  11. Power-constrained supercomputing

    NASA Astrophysics Data System (ADS)

    Bailey, Peter E.

    . Adaptive power balancing efficiently predicts where critical paths are likely to occur and distributes power to those paths. Greater power, in turn, allows increased thread concurrency levels, CPU frequency/voltage, or both. We describe these techniques in detail and show that, compared to the state-of-the-art technique of using statically predetermined, per-node power caps, Conductor leads to a best-case performance improvement of up to 30%, and an average improvement of 19.1%. At the node level, an accurate power/performance model will aid in selecting the right configuration from a large set of available configurations. We present a novel approach to generate such a model offline using kernel clustering and multivariate linear regression. Our model requires only two iterations to select a configuration, which provides a significant advantage over exhaustive search-based strategies. We apply our model to predict power and performance for different applications using arbitrary configurations, and show that our model, when used with hardware frequency-limiting in a runtime system, selects configurations with significantly higher performance at a given power limit than those chosen by frequency-limiting alone. When applied to a set of 36 computational kernels from a range of applications, our model accurately predicts power and performance; our runtime system based on the model maintains 91% of optimal performance while meeting power constraints 88% of the time. When the runtime system violates a power constraint, it exceeds the constraint by only 6% in the average case, while simultaneously achieving 54% more performance than an oracle. Through the combination of the above contributions, we hope to provide guidance and inspiration to research practitioners working on runtime systems for power-constrained environments. We also hope this dissertation will draw attention to the need for software and runtime-controlled power management under power constraints at various levels

  12. Cognitive Style, Operativity, and Reading Achievement.

    ERIC Educational Resources Information Center

    Roberge, James J.; Flexer, Barbara K.

    1984-01-01

    This developmental study was designed to examine the effects of field dependence-independence and level of operational development on the reading achievement of sixth, seventh, and eighth graders. Field dependence-independence had no significant effect on reading achievement, but high-operational students scored significantly higher than…

  13. Mathematics Coursework Regulates Growth in Mathematics Achievement

    ERIC Educational Resources Information Center

    Ma, Xin; Wilkins, Jesse L. M.

    2007-01-01

    Using data from the Longitudinal Study of American Youth (LSAY), we examined the extent to which students' mathematics coursework regulates (influences) the rate of growth in mathematics achievement during middle and high school. Graphical analysis showed that students who started middle school with higher achievement took individual mathematics…

  14. Schooling and Achievement in American Society.

    ERIC Educational Resources Information Center

    Sewell, William H.; And Others

    This book is an outgrowth of an interdisciplinary seminar on achievement processes. The 15 chapters of this book are distributed into three substantive sections. Part One includes a series of chapters dealing in one way or another with achievement in the life cycle. One chapter discusses the causes and consequences of higher education and…

  15. Maryland's Achievements in Public Education, 2011

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2011

    2011-01-01

    This report presents Maryland's achievements in public education for 2011. Maryland's achievements include: (1) Maryland's public schools again ranked #1 in the nation in Education Week's 2011 Quality Counts annual report; (2) Maryland ranked 1st nationwide for a 3rd year in a row in the percentage of public school students scoring 3 or higher on…

  16. Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia.

    PubMed

    Tompkins, D T; Partington, B P; Steeves, R A; Bartholow, S D; Paliwal, B R

    1992-01-01

    Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within the oscillating electromagnetic field; (3) generator power levels of 300 W, 600 W, and 1200 W; and (4) separation of thermoseed tracks by 0.8 cm versus 1 cm. When the thermoseeds were aligned parallel to the electromagnetic field, temperature distributions in the in vivo model using bare thermoseeds and thermoseeds encased in a single sleeve (0.1 mm wall thickness) of polyethylene tubing were statistically higher than in tests performed with thermoseeds encased in a double sleeve (0.25 mm over 0.1 mm wall thickness) of tubing (p = 0.006). Nonetheless, average steady-state temperatures above a therapeutic minimum (greater than or equal to 42 degrees C) were achieved at all generator power levels using thermoseeds encased in a double sleeve of tubing and aligned parallel to the electromagnetic field. Gross misalignment of thermoseeds with the electromagnetic field was partly compensated for by utilizing higher generator power levels. Thermoseed tracks separated by 0.8 cm and aligned parallel to the electromagnetic field yielded average steady-state temperatures that were 0.4-2.2 degrees C higher than those obtained with a thermoseed track separation of 1 cm. PMID:1573313

  17. [Achievement of therapeutic objectives].

    PubMed

    Mantilla, Teresa

    2014-07-01

    Therapeutic objectives for patients with atherogenic dyslipidemia are achieved by improving patient compliance and adherence. Clinical practice guidelines address the importance of treatment compliance for achieving objectives. The combination of a fixed dose of pravastatin and fenofibrate increases the adherence by simplifying the drug regimen and reducing the number of daily doses. The good tolerance, the cost of the combination and the possibility of adjusting the administration to the patient's lifestyle helps achieve the objectives for these patients with high cardiovascular risk. PMID:25043543

  18. Predicting Achievement and Motivation.

    ERIC Educational Resources Information Center

    Uguroglu, Margaret; Walberg, Herbert J.

    1986-01-01

    Motivation and nine other factors were measured for 970 students in grades five through eight in a study of factors predicting achievement and predicting motivation. Results are discussed. (Author/MT)

  19. Student Achievement and Motivation

    ERIC Educational Resources Information Center

    Flammer, Gordon H.; Mecham, Robert C.

    1974-01-01

    Compares the lecture and self-paced methods of instruction on the basis of student motivation and achieveme nt, comparing motivating and demotivating factors in each, and their potential for motivation and achievement. (Authors/JR)

  20. Cognitive Style, Operativity, and Mathematics Achievement.

    ERIC Educational Resources Information Center

    Roberge, James J.; Flexer, Barbara K.

    1983-01-01

    This study examined the effects of field dependence/independence and the level of operational development on the mathematics achievement of 450 students in grades 6-8. Field-independent students scored significantly higher on total mathematics, concepts, and problem-solving tests. High-operational students scored significantly higher on all tests.…

  1. Testosterone and Occupational Achievement.

    ERIC Educational Resources Information Center

    Dabbs, James M., Jr.

    1992-01-01

    Archival data on 4,462 military veterans linked higher levels of serum testosterone to lower-status occupations. A structural equation model was supported in which higher testosterone, mediated through lower intellectual ability, greater antisocial behavior, and lower education, leads away from white-collar occupations. Contains 49 references.…

  2. 2011 Higher Education Sustainability Review

    ERIC Educational Resources Information Center

    Wagner, Margo, Ed.

    2012-01-01

    Looking through the lens of AASHE Bulletin stories in 2011, this year's review reveals an increased focus on higher education access, affordability, and success; more green building efforts than ever before; and growing campus-community engagement on food security, among many other achievements. Contributors include James Applegate (Lumina…

  3. Explorations in achievement motivation

    NASA Technical Reports Server (NTRS)

    Helmreich, Robert L.

    1982-01-01

    Recent research on the nature of achievement motivation is reviewed. A three-factor model of intrinsic motives is presented and related to various criteria of performance, job satisfaction and leisure activities. The relationships between intrinsic and extrinsic motives are discussed. Needed areas for future research are described.

  4. Achieving health care affordability.

    PubMed

    Payson, Norman C

    2002-10-01

    Not all plans are jumping headlong into the consumer-centric arena. In this article, the CEO of Oxford Health Plans discusses how advanced managed care can achieve what other consumer-centric programs seek to do--provide affordable, quality health care. PMID:12391815

  5. Issues in Achievement Testing.

    ERIC Educational Resources Information Center

    Baker, Eva L.

    This booklet is intended to help school personnel, parents, students, and members of the community understand concepts and research relating to achievement testing in public schools. The paper's sections include: (1) test use with direct effects on students (test of certification, selection, and placement); (2) test use with indirect effects on…

  6. Achieving Peace through Education.

    ERIC Educational Resources Information Center

    Clarken, Rodney H.

    While it is generally agreed that peace is desirable, there are barriers to achieving a peaceful world. These barriers are classified into three major areas: (1) an erroneous view of human nature; (2) injustice; and (3) fear of world unity. In a discussion of these barriers, it is noted that although the consciousness and conscience of the world…

  7. Intelligence and Educational Achievement

    ERIC Educational Resources Information Center

    Deary, Ian J.; Strand, Steve; Smith, Pauline; Fernandes, Cres

    2007-01-01

    This 5-year prospective longitudinal study of 70,000+ English children examined the association between psychometric intelligence at age 11 years and educational achievement in national examinations in 25 academic subjects at age 16. The correlation between a latent intelligence trait (Spearman's "g"from CAT2E) and a latent trait of educational…

  8. SALT and Spelling Achievement.

    ERIC Educational Resources Information Center

    Nelson, Joan

    A study investigated the effects of suggestopedic accelerative learning and teaching (SALT) on the spelling achievement, attitudes toward school, and memory skills of fourth-grade students. Subjects were 20 male and 28 female students from two self-contained classrooms at Kennedy Elementary School in Rexburg, Idaho. The control classroom and the…

  9. NCLB: Achievement Robin Hood?

    ERIC Educational Resources Information Center

    Bracey, Gerald W.

    2008-01-01

    In his "Wall Street Journal" op-ed on the 25th of anniversary of "A Nation At Risk", former assistant secretary of education Chester E. Finn Jr. applauded the report for turning U.S. education away from equality and toward achievement. It was not surprising, then, that in mid-2008, Finn arranged a conference to examine the potential "Robin Hood…

  10. INTELLIGENCE, PERSONALITY AND ACHIEVEMENT.

    ERIC Educational Resources Information Center

    MUIR, R.C.; AND OTHERS

    A LONGITUDINAL DEVELOPMENTAL STUDY OF A GROUP OF MIDDLE CLASS CHILDREN IS DESCRIBED, WITH EMPHASIS ON A SEGMENT OF THE RESEARCH INVESTIGATING THE RELATIONSHIP OF ACHIEVEMENT, INTELLIGENCE, AND EMOTIONAL DISTURBANCE. THE SUBJECTS WERE 105 CHILDREN AGED FIVE TO 6.3 ATTENDING TWO SCHOOLS IN MONTREAL. EACH CHILD WAS ASSESSED IN THE AREAS OF…

  11. School Students' Science Achievement

    ERIC Educational Resources Information Center

    Shymansky, James; Wang, Tzu-Ling; Annetta, Leonard; Everett, Susan; Yore, Larry D.

    2013-01-01

    This paper is a report of the impact of an externally funded, multiyear systemic reform project on students' science achievement on a modified version of the Third International Mathematics and Science Study (TIMSS) test in 33 small, rural school districts in two Midwest states. The systemic reform effort utilized a cascading leadership strategy…

  12. Essays on Educational Achievement

    ERIC Educational Resources Information Center

    Ampaabeng, Samuel Kofi

    2013-01-01

    This dissertation examines the determinants of student outcomes--achievement, attainment, occupational choices and earnings--in three different contexts. The first two chapters focus on Ghana while the final chapter focuses on the US state of Massachusetts. In the first chapter, I exploit the incidence of famine and malnutrition that resulted to…

  13. Increasing Male Academic Achievement

    ERIC Educational Resources Information Center

    Jackson, Barbara Talbert

    2008-01-01

    The No Child Left Behind legislation has brought greater attention to the academic performance of American youth. Its emphasis on student achievement requires a closer analysis of assessment data by school districts. To address the findings, educators must seek strategies to remedy failing results. In a mid-Atlantic district of the Unites States,…

  14. Setting and Achieving Objectives.

    ERIC Educational Resources Information Center

    Knoop, Robert

    1986-01-01

    Provides basic guidelines which school officials and school boards may find helpful in negotiating, establishing, and managing objectives. Discusses characteristics of good objectives, specific and directional objectives, multiple objectives, participation in setting objectives, feedback on goal process and achievement, and managing a school…

  15. Schools Achieving Gender Equity.

    ERIC Educational Resources Information Center

    Revis, Emma

    This guide is designed to assist teachers presenting the Schools Achieving Gender Equity (SAGE) curriculum for vocational education students, which was developed to align gender equity concepts with the Kentucky Education Reform Act (KERA). Included in the guide are lesson plans for classes on the following topics: legal issues of gender equity,…

  16. Iowa Women of Achievement.

    ERIC Educational Resources Information Center

    Ohrn, Deborah Gore, Ed.

    1993-01-01

    This issue of the Goldfinch highlights some of Iowa's 20th century women of achievement. These women have devoted their lives to working for human rights, education, equality, and individual rights. They come from the worlds of politics, art, music, education, sports, business, entertainment, and social work. They represent Native Americans,…

  17. Achievements or Disasters?

    ERIC Educational Resources Information Center

    Goodwin, MacArthur

    2000-01-01

    Focuses on policy issues that have affected arts education in the twentieth century, such as: interest in discipline-based arts education, influence of national arts associations, and national standards and coordinated assessment. States that whether the policy decisions are viewed as achievements or disasters are for future determination. (CMK)

  18. Minority Achievement Report.

    ERIC Educational Resources Information Center

    Prince George's Community Coll., Largo, MD. Office of Institutional Research and Analysis.

    This report summarizes the achievements of Prince George's Community College (PGCC) with regard to minority outcomes. Table 1 summarizes the undergraduate enrollment trends for African Americans as well as total minorities from fall 1994 through fall 1998. Both the headcount number of African American students and the proportion of African…

  19. Appraising Reading Achievement.

    ERIC Educational Resources Information Center

    Ediger, Marlow

    To determine quality sequence in pupil progress, evaluation approaches need to be used which guide the teacher to assist learners to attain optimally. Teachers must use a variety of procedures to appraise student achievement in reading, because no one approach is adequate. Appraisal approaches might include: (1) observation and subsequent…

  20. Higher Education in Partnership with Industry.

    ERIC Educational Resources Information Center

    Powers, David R.; And Others

    Partnerships between businesses and higher education are discussed from the standpoint of effects on higher education traditions, policies and practices; business productivity and competitiveness; and opportunities for leadership. Part 1, "Making Partnerships Work: Objectives, Approaches, and Strategies," by David R. Powers and Mary F. Powers,…

  1. 152 W average power Tm-doped fiber CPA system.

    PubMed

    Stutzki, Fabian; Gaida, Christian; Gebhardt, Martin; Jansen, Florian; Wienke, Andreas; Zeitner, Uwe; Fuchs, Frank; Jauregui, Cesar; Wandt, Dieter; Kracht, Dietmar; Limpert, Jens; Tünnermann, Andreas

    2014-08-15

    A high-power thulium (Tm)-doped fiber chirped-pulse amplification system emitting a record compressed average output power of 152 W and 4 MW peak power is demonstrated. This result is enabled by utilizing Tm-doped photonic crystal fibers with mode-field diameters of 35 μm, which mitigate detrimental nonlinearities, exhibit slope efficiencies of more than 50%, and allow for reaching a pump-power-limited average output power of 241 W. The high-compression efficiency has been achieved by using multilayer dielectric gratings with diffraction efficiencies higher than 98%. PMID:25121845

  2. Project ACHIEVE final report

    SciTech Connect

    1997-06-13

    Project ACHIEVE was a math/science academic enhancement program aimed at first year high school Hispanic American students. Four high schools -- two in El Paso, Texas and two in Bakersfield, California -- participated in this Department of Energy-funded program during the spring and summer of 1996. Over 50 students, many of whom felt they were facing a nightmare future, were given the opportunity to work closely with personal computers and software, sophisticated calculators, and computer-based laboratories -- an experience which their regular academic curriculum did not provide. Math and science projects, exercises, and experiments were completed that emphasized independent and creative applications of scientific and mathematical theories to real world problems. The most important outcome was the exposure Project ACHIEVE provided to students concerning the college and technical-field career possibilities available to them.

  3. Achieving Goal Blood Pressure.

    PubMed

    Laurent, Stéphane

    2015-07-01

    Both monotherapy and combination therapy options are appropriate for antihypertensive therapy according to the 2013 European Society of Hypertension (ESH)/European Society of Cardiology (ESC) guidelines. Most patients require more than one agent to achieve blood pressure (BP) control, and adding a second agent is more effective than doubling the dose of existing therapy. The addition of a third agent may be required to achieve adequate BP reductions in some patients. Single-pill fixed-dose combinations (FDCs) allow multiple-drug regimens to be delivered without any negative impact on patient compliance or persistence with therapy. FDCs also have documented beneficial clinical effects and use of FDCs containing two or three agents is recommended by the 2013 ESH/ESC guidelines. PMID:26002423

  4. Student Influence and Higher Education.

    ERIC Educational Resources Information Center

    Juola, Arvo E.

    Since 1965, student views and feelings have influenced great changes in higher education, sometimes to the detriment of long-term interests in academic institutions and colleges. One conspicuous recent trend is the desire of college students for more influence, impact, or power. Other prevalent attitudes may be characterized as a desire to be…

  5. Class Struggle in Higher Education

    ERIC Educational Resources Information Center

    Clawson, Dan; Leiblum, Mishy

    2008-01-01

    Public higher education has undergone a process similar to that in the national polity: a one-sided struggle by those with power to shape the institution to be more market driven, more focused on what will generate (non-state) revenues, more dominated by top administrators, and less concerned about the working class and people of color. This…

  6. Higher Education and European Regionalism.

    ERIC Educational Resources Information Center

    Paterson, Lindsay

    2001-01-01

    Speculates about the relationship between two fundamental social changes occurring in Europe: the development of a mass higher education system and the slow decay of the old states that were inherited from the 19th century, eroded from below by various movements for national and regional autonomy, and eroded from above by the growing power and…

  7. The Relationship between Birth Order and Academic Achievement.

    ERIC Educational Resources Information Center

    Ogletree, Earl J.

    1980-01-01

    The author reviews some selected literature that reports higher academic achievement for first-borns and findings that large enough age gaps between siblings can offset first-born advantages in achievement. (Editor/SJL)

  8. Barriers to Occupational Achievement.

    ERIC Educational Resources Information Center

    Gurman, Ernest B.

    The under-representation of women in prestigious occupations and the lower average pay women earn has been of concern for many years. This study investigated two alternative explanations for this under-representation of females in prestigious and higher paying occupations. The first explanation was external barriers such as discrimination, and the…

  9. Achieving Magnet status.

    PubMed

    Ellis, Beckie; Gates, Judy

    2005-01-01

    Magnet has become the gold standard for nursing excellence. It is the symbol of effective and safe patient care. It evaluates components that inspire safe care, including employee satisfaction and retention, professional education, and effective interdisciplinary collaboration. In an organization whose mission focuses on excellent patient care, Banner Thunderbird Medical Center found that pursuing Magnet status was clearly the next step. In this article, we will discuss committee selection, education, team building, planning, and the discovery process that define the Magnet journey. The road to obtaining Magnet status has permitted many opportunities to celebrate our achievements. PMID:16056158

  10. Synchronizing redundant power oscillators

    NASA Technical Reports Server (NTRS)

    Jenson, K. J.

    1969-01-01

    Outputs of oscillators are synchronized by summing the power transformer phase voltages, the summed voltages are applied to the frequency determining inductors of the individual voltage-controlled power oscillators. The beat frequency is eliminated when synchronization is achieved.

  11. Do KIPP Schools Boost Student Achievement?

    ERIC Educational Resources Information Center

    Gleason, Philip M.; Tuttle, Christina Clark; Gill, Brian; Nichols-Barrer, Ira; Teh, Bing-ru

    2014-01-01

    The Knowledge Is Power Program (KIPP) is an influential and rapidly growing nationwide network of charter schools serving primarily disadvantaged minority students. Prominent elements of KIPP's educational model include high expectations for student achievement and behavior, and a substantial increase in time in school. KIPP is being watched…

  12. Addressing Achievement Gaps with Psychological Interventions

    ERIC Educational Resources Information Center

    Yeager, David; Walton, Gregory; Cohen, Geoffrey L.

    2013-01-01

    Student psychology--how the classroom looks and feels from the perspective of the student--can powerfully affect motivation and learning, and experiments are increasingly showing that even brief interventions to change psychology can boost achievement over months or years. When paired with other structural reforms, social-psychological…

  13. High power density carbonate fuel cell

    SciTech Connect

    Yuh, C.; Johnsen, R.; Doyon, J.; Allen, J.

    1996-12-31

    Carbonate fuel cell is a highly efficient and environmentally clean source of power generation. Many organizations worldwide are actively pursuing the development of the technology. Field demonstration of multi-MW size power plant has been initiated in 1996, a step toward commercialization before the turn of the century, Energy Research Corporation (ERC) is planning to introduce a 2.85MW commercial fuel cell power plant with an efficiency of 58%, which is quite attractive for distributed power generation. However, to further expand competitive edge over alternative systems and to achieve wider market penetration, ERC is exploring advanced carbonate fuel cells having significantly higher power densities. A more compact power plant would also stimulate interest in new markets such as ships and submarines where space limitations exist. The activities focused on reducing cell polarization and internal resistance as well as on advanced thin cell components.

  14. Leadership, self-efficacy, and student achievement

    NASA Astrophysics Data System (ADS)

    Grayson, Kristin

    This study examined the relationships between teacher leadership, science teacher self-efficacy, and fifth-grade science student achievement in diverse schools in a San Antonio, Texas, metropolitan school district. Teachers completed a modified version of the Leadership Behavior Description Question (LBDQ) Form XII by Stogdill (1969), the Science Efficacy and Belief Expectations for Science Teaching (SEBEST) by Ritter, Boone, and Rubba (2001, January). Students' scores on the Texas Assessment of Knowledge and Skills (TAKS) measured fifth-grade science achievement. At the teacher level of analysis multiple regressions showed the following relationships between teachers' science self-efficacy and teacher classroom leadership behaviors and the various teacher and school demographic variables. Predictors of teacher self efficacy beliefs included teacher's level of education, gender, and leadership initiating structure. The only significant predictor of teacher self-efficacy outcome expectancy was gender. Higher teacher self-efficacy beliefs predicted higher leadership initiating structure. At the school level of analysis, higher school levels of percentage of students from low socio-economic backgrounds and higher percentage of limited English proficient students predicted lower school student mean science achievement. These findings suggest a need for continued research to clarify relationships between teacher classroom leadership, science teacher self-efficacy, and student achievement especially at the teacher level of analysis. Findings also indicate the importance of developing instructional methods to address student demographics and their needs so that all students, despite their backgrounds, will achieve in science.

  15. Small high cooling power space cooler

    SciTech Connect

    Nguyen, T. V.; Raab, J.; Durand, D.; Tward, E.

    2014-01-29

    The small High Efficiency pulse tube Cooler (HEC) cooler, that has been produced and flown on a number of space infrared instruments, was originally designed to provide cooling of 10 W @ 95 K. It achieved its goal with >50% margin when limited by the 180 W output ac power of its flight electronics. It has also been produced in 2 stage configurations, typically for simultaneously cooling of focal planes to temperatures as low as 35 K and optics at higher temperatures. The need for even higher cooling power in such a low mass cryocooler is motivated by the advent of large focal plane arrays. With the current availability at NGAS of much larger power cryocooler flight electronics, reliable long term operation in space with much larger cooling powers is now possible with the flight proven 4 kg HEC mechanical cooler. Even though the single stage cooler design can be re-qualified for those larger input powers without design change, we redesigned both the linear and coaxial version passive pulse tube cold heads to re-optimize them for high power cooling at temperatures above 130 K while rejecting heat to 300 K. Small changes to the regenerator packing, the re-optimization of the tuned inertance and no change to the compressor resulted in the increased performance at 150 K. The cooler operating at 290 W input power achieves 35 W@ 150 K corresponding to a specific cooling power at 150 K of 8.25 W/W and a very high specific power of 72.5 W/Kg. At these powers the cooler still maintains large stroke, thermal and current margins. In this paper we will present the measured data and the changes to this flight proven cooler that were made to achieve this increased performance.

  16. Agent-based power sharing scheme for active hybrid power sources

    NASA Astrophysics Data System (ADS)

    Jiang, Zhenhua

    The active hybridization technique provides an effective approach to combining the best properties of a heterogeneous set of power sources to achieve higher energy density, power density and fuel efficiency. Active hybrid power sources can be used to power hybrid electric vehicles with selected combinations of internal combustion engines, fuel cells, batteries, and/or supercapacitors. They can be deployed in all-electric ships to build a distributed electric power system. They can also be used in a bulk power system to construct an autonomous distributed energy system. An important aspect in designing an active hybrid power source is to find a suitable control strategy that can manage the active power sharing and take advantage of the inherent scalability and robustness benefits of the hybrid system. This paper presents an agent-based power sharing scheme for active hybrid power sources. To demonstrate the effectiveness of the proposed agent-based power sharing scheme, simulation studies are performed for a hybrid power source that can be used in a solar car as the main propulsion power module. Simulation results clearly indicate that the agent-based control framework is effective to coordinate the various energy sources and manage the power/voltage profiles.

  17. NASA's Radioisotope Power Systems - Plans

    NASA Technical Reports Server (NTRS)

    Hamley, John A.; Mccallum, Peter W.; Sandifer, Carl E., II; Sutliff, Thomas J.; Zakrajsek, June F.

    2015-01-01

    NASA's Radioisotope Power Systems (RPS) Program continues to plan and implement content to enable planetary exploration where such systems could be needed, and to prepare more advanced RPS technology for possible infusion into future power systems. The 2014-2015 period saw significant changes, and strong progress. Achievements of near-term objectives have enabled definition of a clear path forward in which payoffs from research investments and other sustaining efforts can be applied. The future implementation path is expected to yield a higher-performing thermoelectric generator design, a more isotope-fuel efficient system concept design, and a robust RPS infrastructure maintained effectively within both NASA and the Department of Energy. This paper describes recent work with an eye towards the future plans that result from these achievements.

  18. Recognizing outstanding achievements

    NASA Astrophysics Data System (ADS)

    Speiss, Fred

    One function of any professional society is to provide an objective, informed means for recognizing outstanding achievements in its field. In AGU's Ocean Sciences section we have a variety of means for carrying out this duty. They include recognition of outstanding student presentations at our meetings, dedication of special sessions, nomination of individuals to be fellows of the Union, invitations to present Sverdrup lectures, and recommendations for Macelwane Medals, the Ocean Sciences Award, and the Ewing Medal.Since the decision to bestow these awards requires initiative and judgement by members of our section in addition to a deserving individual, it seems appropriate to review the selection process for each and to urge you to identify those deserving of recognition.

  19. Achieving closure at Fernald

    SciTech Connect

    Bradburne, John; Patton, Tisha C.

    2001-02-25

    When Fluor Fernald took over the management of the Fernald Environmental Management Project in 1992, the estimated closure date of the site was more than 25 years into the future. Fluor Fernald, in conjunction with DOE-Fernald, introduced the Accelerated Cleanup Plan, which was designed to substantially shorten that schedule and save taxpayers more than $3 billion. The management of Fluor Fernald believes there are three fundamental concerns that must be addressed by any contractor hoping to achieve closure of a site within the DOE complex. They are relationship management, resource management and contract management. Relationship management refers to the interaction between the site and local residents, regulators, union leadership, the workforce at large, the media, and any other interested stakeholder groups. Resource management is of course related to the effective administration of the site knowledge base and the skills of the workforce, the attraction and retention of qualified a nd competent technical personnel, and the best recognition and use of appropriate new technologies. Perhaps most importantly, resource management must also include a plan for survival in a flat-funding environment. Lastly, creative and disciplined contract management will be essential to effecting the closure of any DOE site. Fluor Fernald, together with DOE-Fernald, is breaking new ground in the closure arena, and ''business as usual'' has become a thing of the past. How Fluor Fernald has managed its work at the site over the last eight years, and how it will manage the new site closure contract in the future, will be an integral part of achieving successful closure at Fernald.

  20. Effect of equal daily doses achieved by different power densities of low-level laser therapy at 635 nm on open skin wound healing in normal and corticosteroid-treated rats.

    PubMed

    Gál, Peter; Mokrý, Michal; Vidinský, Boris; Kilík, Róbert; Depta, Filip; Harakalová, Magdaléna; Longauer, Frantisek; Mozes, Stefan; Sabo, Ján

    2009-07-01

    Optimal parameters of low-level laser therapy (LLLT) for wound healing are still discussed. Hence, our study was aimed to compare effects of different power densities of LLLT at 635 nm in rats. Four, round, full-thickness, skin wounds were made on the backs of 48 rats that were divided into two groups (non-steroid laser-treated and steroid laser-treated). Three wounds were stimulated daily with a diode laser (daily dose 5 J/cm(2)) each with different power density (1 mW/cm(2), 5 mW/cm(2), and 15 mW/cm(2)), whereas the fourth wound served as a control. Two days, 6 days, and 14 days after surgery, eight animals from each group were killed and samples were removed for histological evaluation. In the non-steroid laser-treated rats, significant acceleration of epithelization and collagen synthesis 2 days and 6 days after surgery was observed in stimulated wounds. In steroid laser-treated rats, 2 days and 14 days after surgery, a decreased leucocyte/macrophage ratio and a reduction in the area of granulation tissue were recorded, respectively. In conclusion, LLLT, by the method we used, improved wound healing in the non-steroid laser-treated rats, but it was useless after corticosteroid treatment. PMID:18716824

  1. Achievement Goals and Achievement Emotions: A Meta-Analysis

    ERIC Educational Resources Information Center

    Huang, Chiungjung

    2011-01-01

    This meta-analysis synthesized 93 independent samples (N = 30,003) in 77 studies that reported in 78 articles examining correlations between achievement goals and achievement emotions. Achievement goals were meaningfully associated with different achievement emotions. The correlations of mastery and mastery approach goals with positive achievement…

  2. Entrepreneur achievement. Liaoning province.

    PubMed

    Zhao, R

    1994-03-01

    This paper reports the successful entrepreneurial endeavors of members of a 20-person women's group in Liaoning Province, China. Jing Yuhong, a member of the Family Planning Association at Shileizi Village, Dalian City, provided the basis for their achievements by first building an entertainment/study room in her home to encourage married women to learn family planning. Once stocked with books, magazines, pamphlets, and other materials on family planning and agricultural technology, dozens of married women in the neighborhood flocked voluntarily to the room. Yuhong also set out to give these women a way to earn their own income as a means of helping then gain greater equality with their husbands and exert greater control over their personal reproductive and social lives. She gave a section of her farming land to the women's group, loaned approximately US$5200 to group members to help them generate income from small business initiatives, built a livestock shed in her garden for the group to raise marmots, and erected an awning behind her house under which mushrooms could be grown. The investment yielded $12,000 in the first year, allowing each woman to keep more than $520 in dividends. Members then soon began going to fairs in the capital and other places to learn about the outside world, and have successfully ventured out on their own to generate individual incomes. Ten out of twenty women engaged in these income-generating activities asked for and got the one-child certificate. PMID:12287775

  3. Handbook of Research on Improving Student Achievement.

    ERIC Educational Resources Information Center

    Cawelti, Gordon, Ed.

    This handbook is designed to identify classroom practices that research has shown to result in higher student achievement. The fundamental idea behind this book is that in order to succeed, efforts to improve instruction must foucs on the existing knowledge base about effective teaching and learning. The chapters are: (1) "Introduction" (Gordon…

  4. Achievement in Boys' Schools 2010-12

    ERIC Educational Resources Information Center

    Wylie, Cathy; Berg, Melanie

    2014-01-01

    This report explores the achievement of school leavers from state and state-integrated boys' schools. The analysis from 2010 to 2012 shows school leavers from state boys' schools had higher qualifications than their male counterparts who attended state co-educational schools. The research was carried out for the Association of Boys' Schools of New…

  5. Academic Freedom, Achievement Standards and Professional Identity

    ERIC Educational Resources Information Center

    Sadler, D. Royce

    2011-01-01

    The tension between the freedom of academics to grade the achievements of their students without interference or coercion and the prerogative of higher education institutions to control grading standards is often deliberated by weighing up the authority and rights of the two parties. An alternative approach is to start with an analysis of the…

  6. The Achiever. Volume 6, Number 4

    ERIC Educational Resources Information Center

    Ashby, Nicole, Ed.

    2007-01-01

    "The Achiever" is a monthly publication designed expressly for parents and community leaders. Each issue contains news and information about school improvement in the United States. Highlights of this issue include: (1) Spellings Convenes National Summit on Higher Education; (2) Noble Street: Chicago Charter High School Creates a Culture of …

  7. Is achievement in Australian chemistry gender based?

    NASA Astrophysics Data System (ADS)

    Beard, John; Fogliani, Charles; Owens, Chris; Wilson, Audrey

    1993-12-01

    This paper compares the performances of female and male secondary students in the 1991 and 1992 Australian National Chemistry Quizzes. Male students consistently achieved a higher mean score in all Year groups (7 to 12), even though the numbers of female and male entrants were approximately equal. Implications for class tests and assessment tasks are addressed.

  8. Communication Studies in Australia: Achievements and Prospects.

    ERIC Educational Resources Information Center

    Irwin, Harry

    The introduction of communications studies in Australian higher education and problems and achievements of the past decade are discussed. Attention is directed to: the development of formal college coursework; staff training and retraining schemes to support development; academic and professional associations; journals in the field; and research,…

  9. A Human Achievement: Mathematics without Boundaries.

    ERIC Educational Resources Information Center

    Terzioglu, Tosun

    This paper describes three fundamental principles, dictated by Wilhelm von Humboldt, that were widely adapted as the basic philosophy of higher education in the United States, and proposes to revise the unfulfilled dream of von Humboldt to make it come true. This paper stresses the achievements of humanity not only in technology, health, or the…

  10. Improving Student Achievement through Alternative Assessments.

    ERIC Educational Resources Information Center

    Durning, Jermaine; Matyasec, Maryann

    An attempt was made to improve students' academic grades and students' opinions of themselves as learners through the use of alternative assessments. The format of mastery learning using the direct instruction practice model was combined with performance-based assessment to increase achievement, self-esteem, and higher level thinking skills.…

  11. The Economic Value of Higher Teacher Quality

    ERIC Educational Resources Information Center

    Hanushek, Eric A.

    2011-01-01

    Most analyses of teacher quality end without any assessment of the economic value of altered teacher quality. This paper combines information about teacher effectiveness with the economic impact of higher achievement. It begins with an overview of what is known about the relationship between teacher quality and student achievement. This provides…

  12. The Homogeneity of School Achievement.

    ERIC Educational Resources Information Center

    Cahan, Sorel

    Since the measurement of school achievement involves the administration of achievement tests to various grades on various subjects, both grade level and subject matter contribute to within-school achievement variations. To determine whether achievement test scores vary most among different fields within a grade level, or within fields among…

  13. Higher Education Exchange, 2014

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2014-01-01

    Research shows that not only does higher education not see the public; when the public, in turn, looks at higher education, it sees mostly malaise, inefficiencies, expense, and unfulfilled promises. Yet, the contributors to this issue of the "Higher Education Exchange" tell of bright spots in higher education where experiments in working…

  14. Higher Education Exchange, 2008

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2008-01-01

    "Higher Education Exchange" publishes case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies. Contributors to this issue of the "Higher Education Exchange" examine whether institutions of higher learning are doing anything to increase the capacity of citizens to shape their future.…

  15. Higher Education Exchange, 2010

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2010-01-01

    "Higher Education Exchange" publishes case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies. Contributors to this issue of the "Higher Education Exchange" examine whether institutions of higher learning are doing anything to increase the capacity of citizens to shape their future.…

  16. Higher Education Exchange, 2011

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2011-01-01

    "Higher Education Exchange" publishes case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies. Contributors to this issue of the "Higher Education Exchange" examine whether institutions of higher learning are doing anything to increase the capacity of citizens to shape their future.…

  17. Higher Education Exchange, 2012

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2012-01-01

    "Higher Education Exchange" publishes case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies. Contributors to this issue of the "Higher Education Exchange" examine whether institutions of higher learning are doing anything to increase the capacity of citizens to shape their future.…

  18. Micromechanical power conversion

    NASA Astrophysics Data System (ADS)

    Noworolski, J. Mark

    A new concept in power conversion, based on electromechanical energy storage, is developed. Mechanical energy storage using Silicon offers a 2 order of magnitude improvement in volumetric energy storage density over conventional approaches using magnetic components. Two broad classes of electromechanical power converter topologies are introduced and analyzed: resonant and boost. Both are shown to scale well to smaller electromechanical device dimensions. A novel self-aligned micromachined polysilicon on nitride (SAMPSON) process flow was developed to fabricate mumechanical devices suitable for the boost conversion function. The process utility includes simplified fabrication of conventional surface micromachined resonators. Calculations showed that well-designed boost converters can achieve step-up factors in excess of 10 while using only a single mumechanical device. Boost converter tests utilizing discrete devices and the fabricated mumechanical elements demonstrated a step-up factor of 1.7. Measurements conducted on representative test devices indicate that power densities an order of magnitude higher than those in conventional power converters are attainable.

  19. HEPEX - achievements and challenges!

    NASA Astrophysics Data System (ADS)

    Pappenberger, Florian; Ramos, Maria-Helena; Thielen, Jutta; Wood, Andy; Wang, Qj; Duan, Qingyun; Collischonn, Walter; Verkade, Jan; Voisin, Nathalie; Wetterhall, Fredrik; Vuillaume, Jean-Francois Emmanuel; Lucatero Villasenor, Diana; Cloke, Hannah L.; Schaake, John; van Andel, Schalk-Jan

    2014-05-01

    HEPEX is an international initiative bringing together hydrologists, meteorologists, researchers and end-users to develop advanced probabilistic hydrological forecast techniques for improved flood, drought and water management. HEPEX was launched in 2004 as an independent, cooperative international scientific activity. During the first meeting, the overarching goal was defined as: "to develop and test procedures to produce reliable hydrological ensemble forecasts, and to demonstrate their utility in decision making related to the water, environmental and emergency management sectors." The applications of hydrological ensemble predictions span across large spatio-temporal scales, ranging from short-term and localized predictions to global climate change and regional modeling. Within the HEPEX community, information is shared through its blog (www.hepex.org), meetings, testbeds and intercompaison experiments, as well as project reportings. Key questions of HEPEX are: * What adaptations are required for meteorological ensemble systems to be coupled with hydrological ensemble systems? * How should the existing hydrological ensemble prediction systems be modified to account for all sources of uncertainty within a forecast? * What is the best way for the user community to take advantage of ensemble forecasts and to make better decisions based on them? This year HEPEX celebrates its 10th year anniversary and this poster will present a review of the main operational and research achievements and challenges prepared by Hepex contributors on data assimilation, post-processing of hydrologic predictions, forecast verification, communication and use of probabilistic forecasts in decision-making. Additionally, we will present the most recent activities implemented by Hepex and illustrate how everyone can join the community and participate to the development of new approaches in hydrologic ensemble prediction.

  20. Effect of Equal Daily Doses Achieved by Different Power Densities of Low-Level Laser Therapy at 635 nm on Open Skin Wound Healing in Normal and Diabetic Rats

    PubMed Central

    Kilík, Róbert; Lakyová, Lucia; Sabo, Ján; Lacjaková, Kamila; Vasilenko, Tomáš; Vidová, Martina; Longauer, František; Radoňak, Jozef

    2014-01-01

    Background and Objective. Despite the fact that the molecular mechanism of low-level laser therapy (LLLT) is not yet known, the exploitation of phototherapy in clinical medicine and surgery is of great interest. The present study investigates the effects of LLLT on open skin wound healing in normal and diabetic rats. Materials and Methods. Four round full-thickness skin wounds on dorsum were performed in male adult nondiabetic (n = 24) and diabetic (n = 24) Sprague–Dawley rats. AlGaInP (635 nm, wavelength; 5 J/cm2, daily dose) was used to deliver power densities of 1, 5, and 15 mW/cm2 three times daily until euthanasia. Results. PMNL infiltration was lower in the irradiated groups (15 mW/cm2). The synthesis and organisation of collagen fibres were consecutively enhanced in the 5 mW/cm2 and 15 mW/cm2 groups compared to the others in nondiabetic rats. In the diabetic group the only significant difference was recorded in the ratio PMNL/Ma at 15 mW/cm2. A significant difference in the number of newly formed capillaries in the irradiated group (5, 15 mW/cm2) was recorded on day six after injury compared to the control group. Conclusion. LLLT confers a protective effect against excessive inflammatory tissue response; it stimulates neovascularization and the early formation of collagen fibres. PMID:24551842

  1. Building aggressively duty-cycled platforms to achieve energy efficiency

    NASA Astrophysics Data System (ADS)

    Agarwal, Yuvraj

    Managing power consumption and improving energy efficiency is a key driver in the design of computing devices today. This is true for both battery-powered mobile devices as well as mains-powered desktop PCs and servers. In case of mobile devices, the focus of optimization is on energy efficiency to maximize battery lifetime. In case of mains-powered devices, we seek to optimize power consumption to reduce energy costs, thermal and environmental concerns. Traditionally, there are two main mechanisms to improve energy efficiency in systems: slowdown techniques that seek to reduce processor speed or radio power against the rate of work done, and shutdown techniques that seek to shut down specific components or subsystems -- such as processor, radio, memory -- to reduce power used by these components when not in use. The adverse effect of using these techniques is either reduced performance (e.g., increase in latency) and/or usability or loss of functionality. The thesis behind this dissertation is that improved energy efficiency can be achieved through system architectures that seek to design and exploit "collaboration" among heterogeneous but functionally similar subsystems. For instance, multiple radio interfaces with different power/performance characteristics can collaborate to provide an energy-efficient wireless communication subsystem. Furthermore, we show that in systems where such heterogeneity is not naturally present, we can introduce heterogeneous components to improve overall energy efficiency. We show that using collaboration, individual subsystems and even entire platforms can be shut down more aggressively to reduce energy consumption, while reducing adverse impacts on performance or usability. We have used collaboration to do energy efficient operation in several contexts. For battery powered mobile devices we show that wireless radios are the dominant power consumers, and then describe several techniques that use various heterogeneous radios present

  2. Tapered fiber based high power random laser.

    PubMed

    Zhang, Hanwei; Du, Xueyuan; Zhou, Pu; Wang, Xiaolin; Xu, Xiaojun

    2016-04-18

    We propose a novel high power random fiber laser (RFL) based on tapered fiber. It can overcome the power scaling limitation of RFL while maintaining good beam quality to a certain extent. An output power of 26.5 W has been achieved in a half-open cavity with one kilometer long tapered fiber whose core diameter gradually changes from 8 μm to 20 μm. The steady-state light propagation equations have been modified by taking into account the effective core area to demonstrate the tapered RFL through numerical calculations. The numerical model effectively describes the power characteristics of the tapered fiber based RFL, and both the calculating and experimental results show higher power exporting potential compared with the conventional single mode RFL. PMID:27137338

  3. Fuel element concept for long life high power nuclear reactors

    NASA Technical Reports Server (NTRS)

    Mcdonald, G. E.; Rom, F. E.

    1969-01-01

    Nuclear reactor fuel elements have burnups that are an order of magnitude higher than can currently be achieved by conventional design practice. Elements have greater time integrated power producing capacity per unit volume. Element design concept capitalizes on known design principles and observed behavior of nuclear fuel.

  4. Achievement of Bevalac rapid mode switching

    SciTech Connect

    Lothrop, F.; Stevenson, R.; Miller, R.; Alonso, J.

    1985-05-01

    Rapid changes of ion, intensity, beam line, and output energy between two modes have been achieved. The techniques for switching among the Bevalac's several injectors are described. Energy level limits at the output (for q/A = 1/2) are 470 to 2100 MeV/n (high power) or 50 to 1050 MeV/n (low power). Depending on specific field value differences, the total time required for a mode change is less than one minute. This mode of operation greatly improves program efficiency in interleaving medical and nuclear science programs at the Bevalac.

  5. Student academic achievement in college chemistry

    NASA Astrophysics Data System (ADS)

    Tabibzadeh, Kiana S.

    General Chemistry is required for variety of baccalaureate degrees, including all medical related fields, engineering, and science majors. Depending on the institution, the prerequisite requirement for college level General Chemistry varies. The success rate for this course is low. The purpose of this study is to examine the factors influencing student academic achievement and retention in General Chemistry at the college level. In this study student achievement is defined by those students who earned grades of "C" or better. The dissertation contains in-depth studies on influence of Intermediate Algebra as a prerequisite compared to Fundamental Chemistry for student academic achievement and student retention in college General Chemistry. In addition the study examined the extent and manner in which student self-efficacy influences student academic achievement in college level General Chemistry. The sample for this part of the study is 144 students enrolled in first semester college level General Chemistry. Student surveys determined student self-efficacy level. The statistical analyses of study demonstrated that Fundamental Chemistry is a better prerequisite for student academic achievement and student retention. The study also found that student self-efficacy has no influence on student academic achievement. The significance of this study will be to provide data for the purpose of establishing a uniform and most suitable prerequisite for college level General Chemistry. Finally the variables identified to influence student academic achievement and enhance student retention will support educators' mission to maximize the students' ability to complete their educational goal at institutions of higher education.

  6. Higher Education Planning. A Bibliographic Handbook.

    ERIC Educational Resources Information Center

    Halstead, D. Kent, Ed.

    The first edition of a bibliography focusing on state and national level planning in higher education is presented. For purposes of this publication, planning is defined as a process of study and foresight that generates action to achieve desired outcomes in the higher education sector. The bibliography is organized into topic areas that include:…

  7. The Centrality of Engagement in Higher Education

    ERIC Educational Resources Information Center

    Fitzgerald, Hiram E.; Bruns, Karen; Sonka, Steven T.; Furco, Andrew; Swanson, Louis

    2012-01-01

    The centrality of engagement is critical to the success of higher education in the future. Engagement is essential to most effectively achieving the overall purpose of the university, which is focused on the knowledge enterprise. Today's engagement is scholarly, is an aspect of learning and discovery, and enhances society and higher education.…

  8. The Centrality of Engagement in Higher Education

    ERIC Educational Resources Information Center

    Fitzgerald, Hiram E.; Bruns, Karen; Sonka, Steven T.; Furco, Andrew; Swanson, Louis

    2016-01-01

    The centrality of engagement is critical to the success of higher education in the future. Engagement is essential to most effectively achieving the overall purpose of the university, which is focused on the knowledge enterprise. Today's engagement is scholarly, is an aspect of learning and discovery, and enhances society and higher education.…

  9. Higher Education and the State in Cuba.

    ERIC Educational Resources Information Center

    Paulston, Rolland G.

    How and why the expansion and reorientation in Cuban higher education has taken place is noted, and continuing problems and emerging trends are assessed. Few developing countries can match Cuban achievements in higher education, which has advanced to levels characteristic of developed societies. Ideological orientations of historical trends are…

  10. The Impact of Reading Achievement on Overall Academic Achievement

    ERIC Educational Resources Information Center

    Churchwell, Dawn Earheart

    2009-01-01

    This study examined the relationship between reading achievement and achievement in other subject areas. The purpose of this study was to determine if there was a correlation between reading scores as measured by the Standardized Test for the Assessment of Reading (STAR) and academic achievement in language arts, math, science, and social studies…

  11. Attitude Towards Physics and Additional Mathematics Achievement Towards Physics Achievement

    ERIC Educational Resources Information Center

    Veloo, Arsaythamby; Nor, Rahimah; Khalid, Rozalina

    2015-01-01

    The purpose of this research is to identify the difference in students' attitude towards Physics and Additional Mathematics achievement based on gender and relationship between attitudinal variables towards Physics and Additional Mathematics achievement with achievement in Physics. This research focused on six variables, which is attitude towards…

  12. Predicting Mathematics Achievement: The Influence of Prior Achievement and Attitudes

    ERIC Educational Resources Information Center

    Hemmings, Brian; Grootenboer, Peter; Kay, Russell

    2011-01-01

    Achievement in mathematics is inextricably linked to future career opportunities, and therefore, understanding those factors that influence achievement is important. This study sought to examine the relationships among attitude towards mathematics, ability and mathematical achievement. This examination was also supported by a focus on gender…

  13. Feasibility study of the University of Utah TRIGA reactor power upgrade in respect to control rod system

    NASA Astrophysics Data System (ADS)

    Cutic, Avdo

    The objectives of this thesis are twofold: to determine the highest achievable power levels of the current University of Utah TRIG Reactor (UUTR) core configuration with the existing three control rods, and to design the core for higher reactor power by optimizing the control rod worth. For the current core configuration, the maximum reactor power, eigenvalue keff, shutdown margin, and excess reactivity have been measured and calculated. These calculated estimates resulted from thermal power calibrations, and the control rod worth measurements at various power levels. The results were then used as a benchmark to verify the MCNP5 core simulations for the current core and then to design a core for higher reactor power. This study showed that the maximum achievable power with the current core configuration and control rod system is 150kW, which is 50kW higher than the licensed power of the UUTR. The maximum achievable UUTR core power with the existing fuel is determined by optimizing the core configuration and control rod worth, showing that a power upgrade of 500 kW is achievable. However, it requires a new control rod system consisting of a total of four control rods. The cost of such an upgrade is $115,000.

  14. Special Higher Education Bibliography.

    ERIC Educational Resources Information Center

    Weinberg, Meyer

    1982-01-01

    Cites works relevant to the higher education of Blacks and minority group members. Lists references alphabetically under the following headings: (1) financial aid on the campus; (2) Chicanos in higher education; and (3) race and equality on California campuses. (GC)

  15. Spotlight on Higher Education.

    ERIC Educational Resources Information Center

    Klinger, Donna; Iwanowski, Jay

    1997-01-01

    A number of current issues and initiatives in higher education are highlighted, including impending reauthorization of the Higher Education Act, the need for advocacy of higher education in public policy arenas, a University of Florida program combining accountability and institutional autonomy, and institutional compliance with nonresident alien…

  16. Higher Education Exchange, 2007

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2007-01-01

    "Higher Education Exchange" publishes case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies. Contributors to this issue of the "Higher Education Exchange" discuss the concept of growing public scholars; each contribution incorporates a student component. Articles include: (1) "Foreword"…

  17. The Higher Education Enterprise.

    ERIC Educational Resources Information Center

    Ottinger, Cecilia A.

    1991-01-01

    Higher education not only contributes to the development of the human resources and intellectual betterment of the nation but is also a major economic enterprise. This research brief reviews and highlights data on the size and growth of higher education and illustrates how higher education institutions are preparing the future labor force. It…

  18. Performance Achievements and Challenges for FELs based on Energy Recovered Linacs

    SciTech Connect

    Geoffrey Krafft

    2006-08-27

    During the past decade several groups have assembled free electron lasers based on energy recovered linacs (ERLs). Such arrangements have been built to obtain high average power electron and photon beams, by using high repetition rate beam pulses driving FEL oscillators. In this paper the performance of many existing and several proposed facilities from around the world are reviewed. Going forward, many questions must be addressed to achieve still better performance including: higher average current injectors, better optimized accelerating cavities, higher energy acceptance and lower loss beam recirculation systems, and better optical cavity designs for dealing with the optical beam power circulating in the ERL FELs. This paper presents some of the current thinking on each of these issues.

  19. DIRECT FUEL/CELL/TURBINE POWER PLANT

    SciTech Connect

    Hossein Ghezel-Ayagh

    2004-05-01

    This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha DFC/T hybrid power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Also, the preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed.

  20. [Research Reports on Academic Achievement.

    ERIC Educational Resources Information Center

    Latts, Sander; And Others

    1969-01-01

    Four counselors studied the relation between achievement and choice of major, achievement and motivation, counseling and motivation, and achievement and employment. To see if those with definite majors or career choices in mind did better than those without, 300 students were tested according to the certainty of their choice. No significant…

  1. Cherokee Culture and School Achievement.

    ERIC Educational Resources Information Center

    Brown, Anthony D.

    1980-01-01

    Compares the effect of cooperative and competitive behaviors of Cherokee and Anglo American elementary school students on academic achievement. Suggests changes in teaching techniques and lesson organization that might raise academic achievement while taking into consideration tribal traditions that limit scholastic achievement in an…

  2. 44 CFR 321.4 - Achieving production readiness.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... achieve a capability for maximum production of “urgent” items during the initial phase of war, the... power, fuel, and water, or on long-distance communications; with spare replacements for...

  3. 44 CFR 321.4 - Achieving production readiness.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... achieve a capability for maximum production of “urgent” items during the initial phase of war, the... power, fuel, and water, or on long-distance communications; with spare replacements for...

  4. 44 CFR 321.4 - Achieving production readiness.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... achieve a capability for maximum production of “urgent” items during the initial phase of war, the... power, fuel, and water, or on long-distance communications; with spare replacements for...

  5. 44 CFR 321.4 - Achieving production readiness.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... achieve a capability for maximum production of “urgent” items during the initial phase of war, the... power, fuel, and water, or on long-distance communications; with spare replacements for...

  6. Students' Achievement Goals, Learning-Related Emotions and Academic Achievement.

    PubMed

    Lüftenegger, Marko; Klug, Julia; Harrer, Katharina; Langer, Marie; Spiel, Christiane; Schober, Barbara

    2016-01-01

    In the present research, the recently proposed 3 × 2 model of achievement goals is tested and associations with achievement emotions and their joint influence on academic achievement are investigated. The study was conducted with 388 students using the 3 × 2 Achievement Goal Questionnaire including the six proposed goal constructs (task-approach, task-avoidance, self-approach, self-avoidance, other-approach, other-avoidance) and the enjoyment and boredom scales from the Achievement Emotion Questionnaire. Exam grades were used as an indicator of academic achievement. Findings from CFAs provided strong support for the proposed structure of the 3 × 2 achievement goal model. Self-based goals, other-based goals and task-approach goals predicted enjoyment. Task-approach goals negatively predicted boredom. Task-approach and other-approach predicted achievement. The indirect effects of achievement goals through emotion variables on achievement were assessed using bias-corrected bootstrapping. No mediation effects were found. Implications for educational practice are discussed. PMID:27199836

  7. Students’ Achievement Goals, Learning-Related Emotions and Academic Achievement

    PubMed Central

    Lüftenegger, Marko; Klug, Julia; Harrer, Katharina; Langer, Marie; Spiel, Christiane; Schober, Barbara

    2016-01-01

    In the present research, the recently proposed 3 × 2 model of achievement goals is tested and associations with achievement emotions and their joint influence on academic achievement are investigated. The study was conducted with 388 students using the 3 × 2 Achievement Goal Questionnaire including the six proposed goal constructs (task-approach, task-avoidance, self-approach, self-avoidance, other-approach, other-avoidance) and the enjoyment and boredom scales from the Achievement Emotion Questionnaire. Exam grades were used as an indicator of academic achievement. Findings from CFAs provided strong support for the proposed structure of the 3 × 2 achievement goal model. Self-based goals, other-based goals and task-approach goals predicted enjoyment. Task-approach goals negatively predicted boredom. Task-approach and other-approach predicted achievement. The indirect effects of achievement goals through emotion variables on achievement were assessed using bias-corrected bootstrapping. No mediation effects were found. Implications for educational practice are discussed. PMID:27199836

  8. Positive Steps for Marketing Higher Education.

    ERIC Educational Resources Information Center

    Fram, Eugene H.

    The potential value of marketing principles to help solve educational problems in higher education is addressed. Four variables that are within the decision power of those in higher education and those in the commercial world are the product, distribution, promotion, and price. The marketing concept demands that policies be built on a base of…

  9. Stretching Your Tax Dollar in Higher Education.

    ERIC Educational Resources Information Center

    Wood, Hugh B.

    If we are to reduce wastage in higher education, we must first understand, and then combat some practices found in educational institutions. Specifically, we must discourage: over-staffing, power politics, and statistical juggling. Each institution of higher learning, each community, each state, should examine objectively the possibilities of…

  10. DIRECT FUEL CELL/TURBINE POWER PLANT

    SciTech Connect

    Hossein Ghezel-Ayagh

    2004-11-01

    This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. The operation of sub-MW hybrid Direct FuelCell/Turbine power plant test facility with a Capstone C60 microturbine was initiated in March 2003. The inclusion of the C60 microturbine extended the range of operation of the hybrid power plant to higher current densities (higher power) than achieved in previous tests using a 30kW microturbine. The design of multi-MW DFC/T hybrid systems, approaching 75% efficiency on natural gas, was initiated. A new concept was developed based on clusters of One-MW fuel cell modules as the building blocks. System analyses were performed, including systems for near-term deployment and power plants with long-term ultra high efficiency objectives. Preliminary assessment of the fuel cell cluster concept, including power plant layout for a 14MW power plant, was performed.

  11. Achievement as Resistance: The Development of a Critical Race Achievement Ideology among Black Achievers

    ERIC Educational Resources Information Center

    Carter, Dorinda J.

    2008-01-01

    In this article, Dorinda Carter examines the embodiment of a critical race achievement ideology in high-achieving black students. She conducted a yearlong qualitative investigation of the adaptive behaviors that nine high-achieving black students developed and employed to navigate the process of schooling at an upper-class, predominantly white,…

  12. Power Mosfets.

    NASA Astrophysics Data System (ADS)

    Chi, Min-Hwa

    A power MOSFET, a semiconductor power device based on modern IC technology, can offer some unique characteristics: high gain with high breakdown voltage, low on-resistance in low voltage devices, and fast switching speed. In response to a fast-growing interest and the need for better understanding, modeling, and design techniques, this thesis is a study of many aspects of power MOSFETs. Analytical models of all components of on-resistance are developed for both linear and cellular source geometries. Lower on-resistance can result from cellular geometries. Calculated results agree with experimental data. Based on these models, a design procedure to achieve minimum on-resistance is proposed. The dimension of source regions should first be minimized. The spacing between source cells is then varied until the resistance is minimized. Inherent limits on the switching speeds and losses of vertical power MOSFETs due to the drain capacitance are analyzed. While the drain capacitance is a function of the drain voltage, it is shown that speeds can be calculated with constant average capacitance. The per-cycle switching loss is similarly analyzed. Graphs of speeds and switching losses are presented as design aids. A model for the phenomenon of second breakdown in vertical power MOSFETs involving the avalanche multiplication of the channel current, the parasitic bipolar transistor, and the MOS body bias effect is proposed. This model is compared with experiments on four-terminal V-groove test devices in which the base can be accessed independently. Good agreement is achieved between calculated and measured boundaries of the safe operating area. A novel structure of power MOSFETs is proposed for low voltage applications where the on-resistance is the main concern. Theoretical analysis shows that this structure can result in many times smaller on-resistance than conventional structures. A fabrication procedure is proposed. The critical step, i.e., the deep vertical etching of

  13. High power fast ramping power supplies

    SciTech Connect

    Marneris,I.; Bajon, E.; Bonati, R.; Sandberg, J.; Roser, T.; Tsoupas, N.

    2009-05-04

    Hundred megawatt level fast ramping power converters to drive proton and heavy ion machines are under research and development at accelerator facilities in the world. This is a leading edge technology. There are several topologies to achieve this power level. Their advantages and related issues will be discussed.

  14. High-power MIXSEL: an integrated ultrafast semiconductor laser with 6.4 W average power.

    PubMed

    Rudin, B; Wittwer, V J; Maas, D J H C; Hoffmann, M; Sieber, O D; Barbarin, Y; Golling, M; Südmeyer, T; Keller, U

    2010-12-20

    High-power ultrafast lasers are important for numerous industrial and scientific applications. Current multi-watt systems, however, are based on relatively complex laser concepts, for example using additional intracavity elements for pulse formation. Moving towards a higher level of integration would reduce complexity, packaging, and manufacturing cost, which are important requirements for mass production. Semiconductor lasers are well established for such applications, and optically-pumped vertical external cavity surface emitting lasers (VECSELs) are most promising for higher power applications, generating the highest power in fundamental transverse mode (>20 W) to date. Ultrashort pulses have been demonstrated using passive modelocking with a semiconductor saturable absorber mirror (SESAM), achieving for example 2.1-W average power, sub-100-fs pulse duration, and 50-GHz pulse repetition rate. Previously the integration of both the gain and absorber elements into a single wafer was demonstrated with the MIXSEL (modelocked integrated external-cavity surface emitting laser) but with limited average output power (<200 mW). We have demonstrated the power scaling concept of the MIXSEL using optimized quantum dot saturable absorbers in an antiresonant structure design combined with an improved thermal management by wafer removal and mounting of the 8-µm thick MIXSEL structure directly onto a CVD-diamond heat spreader. The simple straight cavity with only two components has generated 28-ps pulses at 2.5-GHz repetition rate and an average output power of 6.4 W, which is higher than for any other modelocked semiconductor laser. PMID:21197032

  15. Teachers as Researchers: Does the DRP Predict Student Achievement?

    ERIC Educational Resources Information Center

    Miller, R. Harvey; Pennington, Susan C.

    In order to test claims made regarding the Degrees of Reading Power Test (DRP), a study posed two research questions: (1) How well does the DRP correlate with the more venerable Stanford Achievement Test (SAT)? and (2) How well do these instruments predict students' academic classroom achievement? Three hundred sixty-nine students from two middle…

  16. Vouchers, Class Size Reduction, and Student Achievement: Considering the Evidence.

    ERIC Educational Resources Information Center

    Molnar, Alex

    Proponents of private school vouchers argue that vouchers empower poor families and raise the academic achievement of poor children. They also argue that vouchers may improve achievement by forcing the public schools to compete in an education marketplace in which poor parents hold the power of the purse. Juxtaposed against this issue of vouchers…

  17. Social and Institutional Factors in Reading Achievement in Elementary Schools

    ERIC Educational Resources Information Center

    Auer, Michael; And Others

    1978-01-01

    The relative power of several variables in predicting school reading achievement was considered. Issues were raised concerning the efficacy of altering the resources allocated to a school or changing the social and racial composition of the student body as a strategy for raising achievement levels. (EVH)

  18. Solar powered multipurpose remotely powered aircraft

    NASA Technical Reports Server (NTRS)

    Alexandrou, A. N.; Durgin, W. W.; Cohn, R. F.; Olinger, D. J.; Cody, Charlotte K.; Chan, Agnes; Cheung, Kwok-Hung; Conley, Kristin; Crivelli, Paul M.; Javorski, Christian T.

    1992-01-01

    Increase in energy demands coupled with rapid depletion of natural energy resources have deemed solar energy as an attractive alternative source of power. The focus was to design and construct a solar powered, remotely piloted vehicle to demonstrate the feasibility of solar energy as an effective, alternate source of power. The final design included minimizing the power requirements and maximizing the strength-to-weight and lift-to-drag ratios. Given the design constraints, Surya (the code-name given to the aircraft), is a lightweight aircraft primarily built using composite materials and capable of achieving level flight powered entirely by solar energy.

  19. Reinventing Higher Education

    ERIC Educational Resources Information Center

    Hayes, Dianne

    2012-01-01

    Higher education institutions are in the battle of a lifetime as they are coping with political and economic uncertainties, threats to federal aid, declining state support, higher tuition rates and increased competition from for-profit institutions. Amid all these challenges, these institutions are pressed to keep up with technological demands,…

  20. Higher Education in Arkansas.

    ERIC Educational Resources Information Center

    Arkansas State Dept. of Higher Education, Little Rock.

    This report presents information about higher education in Arkansas. Arkansas is 49th in the United States in the number of citizens over the age of 25 with a baccalaureate or higher degree. Arkansas faces shortages of qualified teachers and nurses in regions of the state at a time when the number of graduates in these professions is declining…

  1. Minorities in Higher Education.

    ERIC Educational Resources Information Center

    Justiz, Manuel J., Ed.; And Others

    This book presents 19 papers on efforts to increase the participation of members of minority groups in higher education. The papers are: (1) "Demographic Trends and the Challenges to American Higher Education" (Manuel Justiz); (2) "Three Realities: Minority Life in the United States--The Struggle for Economic Equity (adapted by Don M. Blandin);…

  2. Reimagining Christian Higher Education

    ERIC Educational Resources Information Center

    Hulme, E. Eileen; Groom, David E., Jr.; Heltzel, Joseph M.

    2016-01-01

    The challenges facing higher education continue to mount. The shifting of the U.S. ethnic and racial demographics, the proliferation of advanced digital technologies and data, and the move from traditional degrees to continuous learning platforms have created an unstable environment to which Christian higher education must adapt in order to remain…

  3. Quality in Higher Education.

    ERIC Educational Resources Information Center

    Ruben, Brent D., Ed.

    This volume contains 21 new and classic papers and readings on quality philosophies and concepts, first, as they have been applied in business and industry but primarily as they relate to and can be applied in higher education. The introduction is titled "The Quality Approach in Higher Education: Context and Concepts for Change" by Brent D. Ruben.…

  4. Higher Education Exchange 2006

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2006-01-01

    Contributors to this issue of the Higher Education Exchange debate the issues around knowledge production, discuss the acquisition of deliberative skills for democracy, and examine how higher education prepares, or does not prepare, students for citizenship roles. Articles include: (1) "Foreword" (Deborah Witte); (2) "Knowledge, Judgment and…

  5. UNIVERSAL HIGHER EDUCATION.

    ERIC Educational Resources Information Center

    MCGRATH, EARL J.

    THIS DOCUMENT IS A REPORT ON A GROUP INQUIRY INTO THE SUBSTANCE AND IMPLICATIONS OF UNIVERSAL HIGHER EDUCATION. ELEVEN CHAPTERS ARE PAPERS PRESENTED AT A CONFERENCE HELD UNDER THE AUSPICES OF THE INSTITUTE OF HIGHER EDUCATION, TEACHERS COLLEGE, COLUMBIA UNIVERSITY, IN PUERTO RICO, NOVEMBER 15-21, 1964, FORECASTING THE FORM AND MISSION OF AMERICAN…

  6. Reinventing Continuing Higher Education

    ERIC Educational Resources Information Center

    Walshok, Mary Lindenstein

    2012-01-01

    Re-inventing continuing higher education is about finding ways to be a more central player in a region's civic, cultural, and economic life as well as in the education of individuals for work and citizenship. Continuing higher education will require data gathering, analytical tools, convening authority, interpretive skills, new models of delivery,…

  7. Gender and Higher Education

    ERIC Educational Resources Information Center

    Bank, Barbara J., Ed.

    2011-01-01

    This comprehensive, encyclopedic review explores gender and its impact on American higher education across historical and cultural contexts. Challenging recent claims that gender inequities in U.S. higher education no longer exist, the contributors--leading experts in the field--reveal the many ways in which gender is embedded in the educational…

  8. Consumerism in Higher Education

    ERIC Educational Resources Information Center

    Green, Mark

    1973-01-01

    In considering consumerism in higher education, the student becomes the consumer,'' the university the corporation,'' and higher education the education industry.'' Other members of the education fraternity become investors, management, workers, direct consumers, and indirect consumers. This article proposes that it behooves the student to…

  9. Higher Education Exchange

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2009-01-01

    This volume begins with an essay by Noelle McAfee, a contributor who is familiar to readers of Higher Education Exchange (HEX). She reiterates Mathews' argument regarding the disconnect between higher education's sense of engagement and the public's sense of engagement, and suggests a way around the epistemological conundrum of "knowledge produced…

  10. Higher Education Exchange, 2009

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2009-01-01

    This volume begins with an essay by Noelle McAfee, a contributor who is familiar to readers of Higher Education Exchange (HEX). She reiterates Kettering's president David Mathews' argument regarding the disconnect between higher education's sense of engagement and the public's sense of engagement, and suggests a way around the epistemological…

  11. The Mechanics of Human Achievement

    PubMed Central

    Duckworth, Angela L.; Eichstaedt, Johannes C.; Ungar, Lyle H.

    2015-01-01

    Countless studies have addressed why some individuals achieve more than others. Nevertheless, the psychology of achievement lacks a unifying conceptual framework for synthesizing these empirical insights. We propose organizing achievement-related traits by two possible mechanisms of action: Traits that determine the rate at which an individual learns a skill are talent variables and can be distinguished conceptually from traits that determine the effort an individual puts forth. This approach takes inspiration from Newtonian mechanics: achievement is akin to distance traveled, effort to time, skill to speed, and talent to acceleration. A novel prediction from this model is that individual differences in effort (but not talent) influence achievement (but not skill) more substantially over longer (rather than shorter) time intervals. Conceptualizing skill as the multiplicative product of talent and effort, and achievement as the multiplicative product of skill and effort, advances similar, but less formal, propositions by several important earlier thinkers. PMID:26236393

  12. Unmet Promise: Raising Minority Achievement. The Achievement Gap.

    ERIC Educational Resources Information Center

    Johnston, Robert C.; Viadero, Debra

    2000-01-01

    This first in a four-part series on why academic achievement gaps persist discusses how to raise minority achievement. It explains how earlier progress in closing the gap has stalled, while at the same time, the greater diversity of student populations and the rapid growth of the Hispanic population and of other ethnic groups have reshaped the…

  13. To Achieve or Not to Achieve: The Question of Women.

    ERIC Educational Resources Information Center

    Gilmore, Beatrice

    Questionnaire and projective data from 323 women aged 18 to 50 were analyzed in order to study the relationships of need achievement and motive to avoid success to age, sex role ideology, and stage in the family cycle. Family background and educational variables were also considered. Level of need achievement was found to be significantly related…

  14. Mathematics Achievement in High- and Low-Achieving Secondary Schools

    ERIC Educational Resources Information Center

    Mohammadpour, Ebrahim; Shekarchizadeh, Ahmadreza

    2015-01-01

    This paper identifies the amount of variance in mathematics achievement in high- and low-achieving schools that can be explained by school-level factors, while controlling for student-level factors. The data were obtained from 2679 Iranian eighth graders who participated in the 2007 Trends in International Mathematics and Science Study. Of the…

  15. Predictive Power of Standard Variables on Postsecondary Achievement in Arkansas

    ERIC Educational Resources Information Center

    Daniels, Lisa; Gibson, Neal; Carmack, Patrick; Smith, Trequita

    2013-01-01

    Today, as many as 25 to 40 percent of students who attend college qualify for some form of remedial education program provided by postsecondary institutions (Kaye, Lord, Bottoms, Presson, & Cornet, 2006). Many colleges and universities view the inclusion of remediation as an integral part of their educational mission. However, the costs of such…

  16. Studying Cormier's Protagonists: Achieving Power through Young Adult Literature.

    ERIC Educational Resources Information Center

    Monseau, Virginia R.

    1994-01-01

    Speculates on what might be gained by using three of Robert Cormier's novels ("I Am the Cheese,""The Chocolate War," and "After the First Death") in the high school classroom. Suggests that the novels can be used not only as compelling literary works but also as a means of helping students understand what is happening to them during the difficult…

  17. Affective Processes and Academic Achievement.

    ERIC Educational Resources Information Center

    Feshbach, Norma Deitch; Feshbach, Seymour

    1987-01-01

    Data indicate that for girls, affective dispositional factors (empathy, depressive affectivity, aggression, and self-concept) are intimately linked to cognitive development and academic achievement. (PCB)

  18. Thermoelectric power generator for variable thermal power source

    SciTech Connect

    Bell, Lon E; Crane, Douglas Todd

    2015-04-14

    Traditional power generation systems using thermoelectric power generators are designed to operate most efficiently for a single operating condition. The present invention provides a power generation system in which the characteristics of the thermoelectrics, the flow of the thermal power, and the operational characteristics of the power generator are monitored and controlled such that higher operation efficiencies and/or higher output powers can be maintained with variably thermal power input. Such a system is particularly beneficial in variable thermal power source systems, such as recovering power from the waste heat generated in the exhaust of combustion engines.

  19. Using SRAM based FPGAs for power-aware high performance wireless sensor networks.

    PubMed

    Valverde, Juan; Otero, Andres; Lopez, Miguel; Portilla, Jorge; de la Torre, Eduardo; Riesgo, Teresa

    2012-01-01

    While for years traditional wireless sensor nodes have been based on ultra-low power microcontrollers with sufficient but limited computing power, the complexity and number of tasks of today's applications are constantly increasing. Increasing the node duty cycle is not feasible in all cases, so in many cases more computing power is required. This extra computing power may be achieved by either more powerful microcontrollers, though more power consumption or, in general, any solution capable of accelerating task execution. At this point, the use of hardware based, and in particular FPGA solutions, might appear as a candidate technology, since though power use is higher compared with lower power devices, execution time is reduced, so energy could be reduced overall. In order to demonstrate this, an innovative WSN node architecture is proposed. This architecture is based on a high performance high capacity state-of-the-art FPGA, which combines the advantages of the intrinsic acceleration provided by the parallelism of hardware devices, the use of partial reconfiguration capabilities, as well as a careful power-aware management system, to show that energy savings for certain higher-end applications can be achieved. Finally, comprehensive tests have been done to validate the platform in terms of performance and power consumption, to proof that better energy efficiency compared to processor based solutions can be achieved, for instance, when encryption is imposed by the application requirements. PMID:22736971

  20. Using SRAM Based FPGAs for Power-Aware High Performance Wireless Sensor Networks

    PubMed Central

    Valverde, Juan; Otero, Andres; Lopez, Miguel; Portilla, Jorge; de la Torre, Eduardo; Riesgo, Teresa

    2012-01-01

    While for years traditional wireless sensor nodes have been based on ultra-low power microcontrollers with sufficient but limited computing power, the complexity and number of tasks of today’s applications are constantly increasing. Increasing the node duty cycle is not feasible in all cases, so in many cases more computing power is required. This extra computing power may be achieved by either more powerful microcontrollers, though more power consumption or, in general, any solution capable of accelerating task execution. At this point, the use of hardware based, and in particular FPGA solutions, might appear as a candidate technology, since though power use is higher compared with lower power devices, execution time is reduced, so energy could be reduced overall. In order to demonstrate this, an innovative WSN node architecture is proposed. This architecture is based on a high performance high capacity state-of-the-art FPGA, which combines the advantages of the intrinsic acceleration provided by the parallelism of hardware devices, the use of partial reconfiguration capabilities, as well as a careful power-aware management system, to show that energy savings for certain higher-end applications can be achieved. Finally, comprehensive tests have been done to validate the platform in terms of performance and power consumption, to proof that better energy efficiency compared to processor based solutions can be achieved, for instance, when encryption is imposed by the application requirements. PMID:22736971

  1. Ethical Issues in Mentoring Adults in Higher Education

    ERIC Educational Resources Information Center

    Hansman, Catherine A.

    2009-01-01

    This article examines practical problems encountered in mentoring adult learners in higher education through stories of ethical dilemmas. Each incident illustrates the power that mentors possess and the ethical challenges of using this power to help or hurt proteges. Each example addresses an aspect of such power; the power to remove oneself as a…

  2. Sustainability and Higher Education

    ERIC Educational Resources Information Center

    Hales, David

    2008-01-01

    People face four fundamental dilemmas, which are essentially moral choices: (1) alleviating poverty; (2) removing the gap between rich and poor; (3) controlling the use of violence for political ends; and (4) changing the patterns of production and consumption and achieving the transition to sustainability. The world in which future generations…

  3. General Achievement Trends: South Dakota

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  4. The Process of Science Achievement.

    ERIC Educational Resources Information Center

    Papanastasiou, Constantinos; Papanastasiou, Elena C.

    2002-01-01

    Investigates the science achievement of 8th grade students in Cyprus by using a structural equation model with three exogenous constructs--family's educational background, reinforcements, and school climate, and three endogenous constructs--teaching, student attitudes, and achievement. Proposes a model for the effects of family, school, student…

  5. Examination Regimes and Student Achievement

    ERIC Educational Resources Information Center

    Cosentino de Cohen, Clemencia

    2010-01-01

    Examination regimes at the end of secondary school vary greatly intra- and cross-nationally, and in recent years have undergone important reforms often geared towards increasing student achievement. This research presents a comparative analysis of the relationship between examination regimes and student achievement in the OECD. Using a micro…

  6. School Size and Student Achievement

    ERIC Educational Resources Information Center

    Riggen, Vicki

    2013-01-01

    This study examined whether a relationship between high school size and student achievement exists in Illinois public high schools in reading and math, as measured by the Prairie State Achievement Exam (PSAE), which is administered to all Illinois 11th-grade students. This study also examined whether the factors of socioeconomic status, English…

  7. Motivational Factors in School Achievement.

    ERIC Educational Resources Information Center

    Maehr, Martin L.

    A summary is presented of the literature on motivation relating to achievement in the classroom. Special attention is given to how values, ideology, and various cultural patterns may serve to enhance motivation to achieve in the classroom. In considering what determines motivation and personal investment in educational pursuits, the following…

  8. General Achievement Trends: New Jersey

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  9. General Achievement Trends: North Carolina

    ERIC Educational Resources Information Center

    Center on Education Policy, 2009

    2009-01-01

    This general achievement trends profile includes information that the Center on Education Policy (CEP) and the Human Resources Research Organization (HumRRO) obtained from states from fall 2008 through April 2009. Included herein are: (1) Bullet points summarizing key findings about achievement trends in that state at three performance…

  10. Perils of Standardized Achievement Testing

    ERIC Educational Resources Information Center

    Haladyna, Thomas M.

    2006-01-01

    This article argues that the validity of standardized achievement test-score interpretation and use is problematic; consequently, confidence and trust in such test scores may often be unwarranted. The problem is particularly severe in high-stakes situations. This essay provides a context for understanding standardized achievement testing, then…

  11. Raising Boys' Achievement in Schools.

    ERIC Educational Resources Information Center

    Bleach, Kevan, Ed.

    This book offers insights into the range of strategies and good practice being used to raise the achievement of boys. Case studies by school-based practitioners suggest ideas and measures to address the issue of achievement by boys. The contributions are: (1) "Why the Likely Lads Lag Behind" (Kevan Bleach); (2) "Helping Boys Do Better in Their…

  12. Stress Correlates and Academic Achievement.

    ERIC Educational Resources Information Center

    Bentley, Donna Anderson; And Others

    An ongoing concern for educators is the identification of factors that contribute to or are associated with academic achievement; one such group of variables that has received little attention are those involving stress. The relationship between perceived sources of stress and academic achievement was examined to determine if reactions to stress…

  13. Achievement in Writing Geometry Proofs.

    ERIC Educational Resources Information Center

    Senk, Sharon L.

    In 1981 a nationwide assessment of achievement in writing geometry proofs was conducted by the Cognitive Development and Achievement in Secondary School Geometry project. Over 1,500 students in 11 schools in 5 states participated. This paper describes the sample, instruments, grading procedures, and selected results. Results include: (1) at the…

  14. Teaching the Low Level Achiever.

    ERIC Educational Resources Information Center

    Salomone, Ronald E., Ed.

    1986-01-01

    Intended for teachers of the English language arts, the articles in this issue offer suggestions and techniques for teaching the low level achiever. Titles and authors of the articles are as follows: (1) "A Point to Ponder" (Rachel Martin); (2) "Tracking: A Self-Fulfilling Prophecy of Failure for the Low Level Achiever" (James Christopher Davis);…

  15. Predicting Achievement in Foreign Language.

    ERIC Educational Resources Information Center

    Hart, Mary Elizabeth

    A review of research is inconclusive concerning the relationship between intelligence and language proficiency. A study of 10th grade students (n=35) examined scores on a high school entrance exam and achievement in foreign language after 1 year of study. Both math and reading showed a significant correlation with foreign language achievement; the…

  16. Superintendent Tenure and Student Achievement

    ERIC Educational Resources Information Center

    Simpson, Jennifer

    2013-01-01

    A correlational research design was used to examine the influence of superintendent tenure on student achievement in rural Appalachian Kentucky school districts. Superintendent tenure was compared to aggregated student achievement scores for 2011 and to changes in students' learning outcomes over the course of the superintendents' tenure. The…

  17. On higher structures

    NASA Astrophysics Data System (ADS)

    Baas, Nils A.

    2016-08-01

    In this paper, we discuss various philosophical aspects of the hyperstructure concept extending networks and higher categories. By this discussion, we hope to pave the way for applications and further developments of the mathematical theory of hyperstructures.

  18. Forecasting Higher Education's Future.

    ERIC Educational Resources Information Center

    Boyken, Don; Buck, Tina S.; Kollie, Ellen; Przyborowski, Danielle; Rondinelli, Joseph A.; Hunter, Jeff; Hanna, Jeff

    2003-01-01

    Offers predictions on trends in higher education to accommodate changing needs, lower budgets, and increased enrollment. They involve campus construction, security, administration, technology, interior design, athletics, and transportation. (EV)

  19. Marketing Higher Education

    ERIC Educational Resources Information Center

    O'Brian, Edward J.

    1973-01-01

    Describes the 4 basic areas in which institutional marketing can be put to use in higher educational institutions: educational services offered, pricing (tuition), promotion to prospective students, and distribution (extension courses and courses that go to the student). (PG)

  20. Stigma Power

    PubMed Central

    Link, Bruce G.; Phelan, Jo

    2015-01-01

    When people have an interest in keeping other people down, in or away, stigma is a resource that allows them to obtain ends they desire. We call this resource “stigma power” and use the term to refer to instances in which stigma processes achieve the aims of stigmatizers with respect to the exploitation, control or exclusion of others. We draw on Bourdieu (1987; 1990) who notes that power is often most effectively deployed when it is hidden or “misrecognized.” To explore the utility of the stigma power concept we examine ways in which the goals of stigmatizers are achieved but hidden in the stigma coping efforts of people with mental illnesses. We developed new self-report measures and administered them to a sample of individuals who have experienced mental illness to test whether results are consistent with the possibility that, in response to negative societal conceptions, the attitudes, beliefs and behaviors of people with psychosis lead them to be concerned with staying in, propelled to stay away and induced to feel downwardly placed –precisely the outcomes stigmatizers might desire. Our introduction of the stigma power concept carries the possibility of seeing stigmatizing circumstances in a new light. PMID:24507908

  1. Self-adjusting anode power supply for a gyrotron

    SciTech Connect

    Brand, G.F.; Fekete, P.W.; Hong, K. ); Idehara, T.; Tatsukawa, T. )

    1991-02-01

    Sydney University's tunable cw gyrotrons use a simplified power supply arrangement to provide the voltages on the gun electrodes. The cathode supply is conventional, but the anode voltage is provided by a single high-value resistor connected between the anode and ground. A small fraction of the electrons in the beam are reflected and the anode automatically finds an optimum operating potential. This arrangement is shown to have lower starting currents. Two advantages follow. It becomes easier to operate low-power gyrotrons with modest power supplies and it becomes easier to achieve higher frequencies by exciting harmonics of the electron cyclotron frequency.

  2. Pacific Northwest Electric Power Planning and Conservation Act : Legislative History of the Act to Assist the Electrical Consumers of the Pacific Northwest through use of the Federal Columbia River Power System to Achieve Cost-Effective Energy Conservation : P.L. 96-501, 94 Stat. 2697.

    SciTech Connect

    United States. Bonneville Power Administration.

    1981-01-01

    The Pacific Northwest Electric Power Planning and Conservation Act became effective when it was signed into law by President Carter on December 5, 1980. This ended a four-year debate over legislation designed to plan and coordinate the region's energy future. This legislative history is an abbreviated version taken from the larger historical file maintained by the BPA Law Library. It is intended to assist BPA personnel and others who are studying the Northwest Power Act and working on its implementation. The documents included were selected for their value in determining what Congress meant in enacting the statute and to provide the researcher with a starting point for further investigation. These documents include: a history of the Act, a chronology of the legislative action leading to passage of the law; a section-by-section analysis of the Act; the Congressional Records of Senate and House debates on the bill and its amendments, and a list of Congressional committee hearings.

  3. EDITORIAL: Deeper, broader, higher, better?

    NASA Astrophysics Data System (ADS)

    Dobson, Ken

    1998-07-01

    Honorary Editor The standard of educational achievement in England and Wales is frequently criticized, and it seems to be an axiom of government that schools and teachers need to be shaken up, kept on a tight rein, copiously inspected, shamed and blamed as required: in general, subjected to the good old approach of: ' Find out what Johnny is doing and tell him to stop.' About the only exception to this somewhat severe attitude is at A-level, where the standard is simply golden. Often, comparisons are made between the performance of, say, English children and that of their coevals in other countries, with different customs, systems, aims and languages. But there has been a recent comparison of standards at A-level with a non-A-level system of pre-university education, in an English-speaking country that both sends students to English universities and accepts theirs into its own, and is, indeed, represented in the UK government at well above the level expected from its ethnical weighting in the population. This semi-foreign country is Scotland. The conclusions of the study are interesting. Scotland has had its own educational system, with `traditional breadth', and managed to escape much of the centralized authoritarianism that we have been through south of the border. It is interesting to note that, while for the past dozen years or so the trend in A-level Physics entries has been downwards, there has been an increase in the take-up of Scottish `Highers'. Highers is a one-year course. Is its popularity due to its being easier than A-level? Scottish students keen enough to do more can move on to the Certificate of Sixth Year Studies, and will shortly be able to upgrade a Higher Level into an Advanced Higher Level. A comparability study [ Comparability Study of Scottish Qualifications and GCE Advanced Levels: Report on Physics January 1998 (free from SQA)] was carried out by the Scottish Qualifications Authority (SQA) with the aim (amongst others) of helping

  4. Multi-Megawatt Power System Trade Study

    SciTech Connect

    Longhurst, Glen Reed; Schnitzler, Bruce Gordon; Parks, Benjamin Travis

    2001-11-01

    As part of a larger task, the Idaho National Engineering and Environmental Laboratory (INEEL) was tasked to perform a trade study comparing liquid-metal cooled reactors having Rankine power conversion systems with gas-cooled reactors having Brayton power conversion systems. This report summarizes the approach, the methodology, and the results of that trade study. Findings suggest that either approach has the possibility to approach the target specific mass of 3-5 kg/kWe for the power system, though it appears either will require improvements to achieve that. Higher reactor temperatures have the most potential for reducing the specific mass of gas-cooled reactors but do not necessarily have a similar effect for liquid-cooled Rankine systems. Fuels development will be the key to higher reactor operating temperatures. Higher temperature turbines will be important for Brayton systems. Both replacing lithium coolant in the primary circuit with gallium and replacing potassium with sodium in the power loop for liquid systems increase system specific mass. Changing the feed pump turbine to an electric motor in Rankine systems has little effect. Key technologies in reducing specific mass are high reactor and radiator operating temperatures, low radiator areal density, and low turbine/generator system masses. Turbine/generator mass tends to dominate overall power system mass for Rankine systems. Radiator mass was dominant for Brayton systems.

  5. Ethiopian New Public Universities: Achievements, Challenges and Illustrative Case Studies

    ERIC Educational Resources Information Center

    van Deuren, Rita; Kahsu, Tsegazeab; Mohammed, Seid; Woldie, Wondimu

    2016-01-01

    Purpose: This paper aims to analyze and illustrate achievements and challenges of Ethiopian higher education, both at the system level and at the level of new public universities. Design/methodology/approach: Achievements and challenges at the system level are based on literature review and secondary data. Illustrative case studies are based on…

  6. Finishing the Job: Improving the Achievement of Vocational Students.

    ERIC Educational Resources Information Center

    Bottoms, Gene; Presson, Alice

    The Southern Regional Education Board (SREB)-State Vocational Education Consortium's commitment to higher standards for and greater achievement of vocational students has brought substantial gains in student performance. SREB's High Schools That Work (HSTW), a school improvement initiative, documents achievement gains by vocational students. Data…

  7. Flipping College Algebra: Effects on Student Engagement and Achievement

    ERIC Educational Resources Information Center

    Ichinose, Cherie; Clinkenbeard, Jennifer

    2016-01-01

    This study compared student engagement and achievement levels between students enrolled in a traditional college algebra lecture course and students enrolled in a "flipped" course. Results showed that students in the flipped class had consistently higher levels of achievement throughout the course than did students in the traditional…

  8. Teachers Developing Assessment for Learning: Impact on Student Achievement

    ERIC Educational Resources Information Center

    Wiliam, Dylan; Lee, Clare; Harrison, Christine; Black, Paul

    2004-01-01

    While it is generally acknowledged that increased use of formative assessment (or assessment for learning) leads to higher quality learning, it is often claimed that the pressure in schools to improve the results achieved by students in externally-set tests and examinations precludes its use. This paper reports on the achievement of secondary…

  9. Long-Term Learning, Achievement Tests, and Learner Centered Instruction

    ERIC Educational Resources Information Center

    Salinas, Moises F.; Kane-Johnson, Sarah E.; Vasil-Miller, Melissa A.

    2008-01-01

    The purpose of this study was to examine the effectiveness of achievement tests to measure long-term learning at the higher education level in traditional verses learner-centered classrooms. Volunteer instructors who use comprehensive achievement tests as an important component of their grading system were asked to complete an instrument that…

  10. A Domain-level Approach to Describing Growth in Achievement

    ERIC Educational Resources Information Center

    Schulz, E. Matthew; Lee, Won-Chan; Mullen, Ken

    2005-01-01

    Descriptions of growth in educational achievement often rely on the notion that higher-level students can do whatever lower-level students can do, plus at least one more thing. This article presents a method of supporting such descriptions using the data of a subject-area achievement test. Multiple content domains with an expected order of…

  11. Applications of power beaming from space-based nuclear power stations. [Laser beaming to airplanes; microwave beaming to ground

    SciTech Connect

    Powell, J.R.; Botts, T.E.; Hertzberg, A.

    1981-01-01

    Power beaming from space-based reactor systems is examined using an advanced compact, lightweight Rotating Bed Reactor (RBR). Closed Brayton power conversion efficiencies in the range of 30 to 40% can be achieved with turbines, with reactor exit temperatures on the order of 2000/sup 0/K and a liquid drop radiator to reject heat at temperatures of approx. 500/sup 0/K. Higher RBR coolant temperatures (up to approx. 3000/sup 0/K) are possible, but gains in power conversion efficiency are minimal, due to lower expander efficiency (e.g., a MHD generator). Two power beaming applications are examined - laser beaming to airplanes and microwave beaming to fixed ground receivers. Use of the RBR greatly reduces system weight and cost, as compared to solar power sources. Payback times are a few years at present prices for power and airplane fuel.

  12. Power output during women's World Cup road cycle racing.

    PubMed

    Ebert, Tammie R; Martin, David T; McDonald, Warren; Victor, James; Plummer, John; Withers, Robert T

    2005-12-01

    Little information exists on the power output demands of competitive women's road cycle racing. The purpose of our investigation was to document the power output generated by elite female road cyclists who achieved success in FLAT and HILLY World Cup races. Power output data were collected from 27 top-20 World Cup finishes (19 FLAT and 8 HILLY) achieved by 15 nationally ranked cyclists (mean +/- SD; age: 24.1+/-4.0 years; body mass: 57.9+/-3.6 kg; height: 168.7+/-5.6 cm; VO2max 63.6+/-2.4 mL kg(-1) min(-1); peak power during graded exercise test (GXT(peak power)): 310+/-25 W). The GXT determined GXT(peak power), VO2peak lactate threshold (LT) and anaerobic threshold (AT). Bicycles were fitted with SRM powermeters, which recorded power (W), cadence (rpm), distance (km) and speed (km h(-1)). Racing data were analysed to establish time in power output and metabolic threshold bands and maximal mean power (MMP) over different durations. When compared to HILLY, FLAT were raced at a similar cadence (75+/-8 vs. 75+/-4 rpm, P=0.93) but higher speed (37.6+/-2.6 vs. 33.9+/-2.7 km h(-1), P=0.008) and power output (192+/-21 vs. 169+/-17 W, P=0.04; 3.3+/-0.3 vs. 3.0+/-0.4 W kg(-1), P=0.04). During FLAT races, riders spent significantly more time above 500 W, while greater race time was spent between 100 and 300 W (LT-AT) for HILLY races, with higher MMPs for 180-300 s. Racing terrain influenced the power output profiles of our internationally competitive female road cyclists. These data are the first to define the unique power output requirements associated with placing well in both flat and hilly women's World Cup cycling events. PMID:16151832

  13. High Power Density Motors

    NASA Technical Reports Server (NTRS)

    Kascak, Daniel J.

    2004-01-01

    With the growing concerns of global warming, the need for pollution-free vehicles is ever increasing. Pollution-free flight is one of NASA's goals for the 21" Century. , One method of approaching that goal is hydrogen-fueled aircraft that use fuel cells or turbo- generators to develop electric power that can drive electric motors that turn the aircraft's propulsive fans or propellers. Hydrogen fuel would likely be carried as a liquid, stored in tanks at its boiling point of 20.5 K (-422.5 F). Conventional electric motors, however, are far too heavy (for a given horsepower) to use on aircraft. Fortunately the liquid hydrogen fuel can provide essentially free refrigeration that can be used to cool the windings of motors before the hydrogen is used for fuel. Either High Temperature Superconductors (HTS) or high purity metals such as copper or aluminum may be used in the motor windings. Superconductors have essentially zero electrical resistance to steady current. The electrical resistance of high purity aluminum or copper near liquid hydrogen temperature can be l/lOO* or less of the room temperature resistance. These conductors could provide higher motor efficiency than normal room-temperature motors achieve. But much more importantly, these conductors can carry ten to a hundred times more current than copper conductors do in normal motors operating at room temperature. This is a consequence of the low electrical resistance and of good heat transfer coefficients in boiling LH2. Thus the conductors can produce higher magnetic field strengths and consequently higher motor torque and power. Designs, analysis and actual cryogenic motor tests show that such cryogenic motors could produce three or more times as much power per unit weight as turbine engines can, whereas conventional motors produce only 1/5 as much power per weight as turbine engines. This summer work has been done with Litz wire to maximize the current density. The current is limited by the amount of heat it

  14. Australian Higher Education Reforms--Unification or Diversification?

    ERIC Educational Resources Information Center

    Coombe, Leanne

    2015-01-01

    The higher education policy of the previous Australian government aimed to achieve an internationally competitive higher education sector while expanding access opportunities to all Australians. This policy agenda closely reflects global trends that focus on achieving both quality and equity objectives. In this paper, the formulation and…

  15. Power converter

    NASA Technical Reports Server (NTRS)

    Black, J. M. (Inventor)

    1981-01-01

    A dc-to-dc converter employs four transistor switches in a bridge to chop dc power from a source, and a voltage multiplying diode rectifying ladder network to rectify and filter the chopped dc power for delivery to a load. The bridge switches are cross coupled in order for diagonally opposite pairs to turn on and off together using RC networks for the cross coupling to achieve the mode of operation of a free running multivibrator, and the diode rectifying ladder is configured to operate in a push-pull mode driven from opposite sides of the multivibrator outputs of the ridge switches. The four transistor switches provide a square-wave output voltage which as a peak-to-peak amplitude that is twice the input dc voltage, and is thus useful as a dc-to-ac inverter.

  16. Higher dimensional Hadamard matrices

    NASA Technical Reports Server (NTRS)

    Schlichta, P. J.

    1979-01-01

    The paper defines higher dimensional Hadamard matrices and enumerates on some of the simplest three-, four-, and five-dimensional cases and procedures for generating them. Special emphasis is given to proper matrices that have a dimensional hierarchy of orthogonalities. It is determined that this property lends itself primarily to the application of higher dimensional Hadamard matrices to error-correcting codes. A list of derived statements for n-dimensional Hadamard matrices are given, as well as a definition of Hadamard matrix families, such as minimal, Petrie polygon, antipodal (n-2)-dimensional sections, and double proximity shells.

  17. Higher Spin Holography

    NASA Astrophysics Data System (ADS)

    Chang, Chi-Ming

    This dissertation splits into two distinct halves. The first half is devoted to the study of the holography of higher spin gauge theory in AdS 3. We present a conjecture that the holographic dual of W N minimal model in a 't Hooft-like large N limit is an unusual "semi-local" higher spin gauge theory on AdS3 x 1. At each point on the S1 lives a copy of three-dimensional Vasiliev theory, that contains an infinite tower of higher spin gauge fields coupled to a single massive complex scalar propagating in AdS3. The Vasiliev theories at different points on the S1 are correlated only through the AdS3 boundary conditions on the massive scalars. All but one single tower of higher spin symmetries are broken by the boundary conditions. This conjecture is checked by comparing tree-level two- and three-point functions, and also one-loop partition functions on both side of the duality. The second half focuses on the holography of higher spin gauge theory in AdS 4. We demonstrate that a supersymmetric and parity violating version of Vasiliev's higher spin gauge theory in AdS4 admits boundary conditions that preserve N = 0,1,2,3,4 or 6 supersymmetries. In particular, we argue that the Vasiliev theory with U( M) Chan-Paton and N = 6 boundary condition is holographically dual to the 2+1 dimensional U(N) k x U(M) -k ABJ theory in the limit of large N, k and finite M. In this system all bulk higher spin fields transform in the adjoint of the U(M) gauge group, whose bulk t'Hooft coupling is M/N. Our picture suggests that the supersymmetric Vasiliev theory can be obtained as a limit of type IIA string theory in AdS4 x CP3, and that the non-Abelian Vasiliev theory at strong bulk 't Hooft coupling smoothly turn into a string field theory. The fundamental string is a singlet bound state of Vasiliev's higher spin particles held together by U(M) gauge interactions.

  18. Higher spin cosmology

    NASA Astrophysics Data System (ADS)

    Krishnan, Chethan; Raju, Avinash; Roy, Shubho; Thakur, Somyadip

    2014-02-01

    We construct cosmological solutions of higher spin gravity in 2+1 dimensional de Sitter space. We show that a consistent thermodynamics can be obtained for their horizons by demanding appropriate holonomy conditions. This is equivalent to demanding the integrability of the Euclidean boundary conformal field theory partition function, and it reduces to Gibbons-Hawking thermodynamics in the spin-2 case. By using the prescription of Maldacena, we relate the thermodynamics of these solutions to those of higher spin black holes in AdS3.

  19. Childhood Obesity and Cognitive Achievement.

    PubMed

    Black, Nicole; Johnston, David W; Peeters, Anna

    2015-09-01

    Obese children tend to perform worse academically than normal-weight children. If poor cognitive achievement is truly a consequence of childhood obesity, this relationship has significant policy implications. Therefore, an important question is to what extent can this correlation be explained by other factors that jointly determine obesity and cognitive achievement in childhood? To answer this question, we exploit a rich longitudinal dataset of Australian children, which is linked to national assessments in math and literacy. Using a range of estimators, we find that obesity and body mass index are negatively related to cognitive achievement for boys but not girls. This effect cannot be explained by sociodemographic factors, past cognitive achievement or unobserved time-invariant characteristics and is robust to different measures of adiposity. Given the enormous importance of early human capital development for future well-being and prosperity, this negative effect for boys is concerning and warrants further investigation. PMID:26123250

  20. Using Design To Achieve Sustainability

    EPA Science Inventory

    Sustainability is defined as meeting the needs of this generation without compromising the ability of future generations to meet their needs. This is a conditional statement that places the responsibility for achieving sustainability squarely in hands of designers and planners....

  1. A Comparison of Formal Features of Written Language of Learning Disabled, Low-Achieving and Achieving Secondary Students.

    ERIC Educational Resources Information Center

    Moran, Mary Ross

    The written language characteristics of 26 learning disabled (LD), 26 low achieving (LA), and 26 achieving (ACH) students in grades 7 through 10 were measured using paragraph writing and topic sentence tasks. Tests of differences between LD and LA Ss revealed that spelling was the only formal feature which was significantly higher in the LA group.…

  2. Direct FuelCell/Turbine Power Plant

    SciTech Connect

    Hossein Ghezel-Ayagh

    2004-11-19

    This report includes the progress in development of Direct Fuel Cell/Turbine. (DFC/T.) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha sub-MW DFC/T power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. Following these proof-of-concept tests, a stand-alone test of the microturbine verified the turbine power output expectations at an elevated (representative of the packaged unit condition) turbine inlet temperature. Preliminary design of the packaged sub-MW alpha DFC/T unit has been completed and procurement activity has been initiated. The preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed. A preliminary cost estimate for the 40 MW DFC/T plant has also been prepared. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Alternate stack flow geometries for increased power output/fuel utilization capabilities are also being evaluated.

  3. Interdisciplinarity in Higher Education.

    ERIC Educational Resources Information Center

    Hanisch, Thor Einar; Vollmann, Wolfgang, Ed.

    The advantages of an interdisciplinary approach to college instruction and research are examined, based in part on a 1983 symposium of the European Centre for Higher Education. Six case studies are also presented. It is noted that interdisciplinarity opens up possibilities of exchange between individual disciplines and encourages the development…

  4. Higher Education's Strange Paradox.

    ERIC Educational Resources Information Center

    Howe, Harold, II

    The university which has had the temerity to change the world has not had the nerve to change itself to live in that world. The result is that the university's grading system, curriculum, teaching methods, and philosophies are in conflict with the world beyond the campus gates, and higher education does not meet the intellectual and social needs…

  5. Entrepreneurship and Higher Education

    ERIC Educational Resources Information Center

    Potter, Jonathan, Ed.

    2008-01-01

    Stimulating innovative and growth-oriented entrepreneurship is a key economic and societal challenge to which universities and colleges have much to contribute. This book examines the role that higher education institutions are currently playing through teaching entrepreneurship and transferring knowledge and innovation to enterprises and…

  6. California's Future: Higher Education

    ERIC Educational Resources Information Center

    Johnson, Hans

    2015-01-01

    California's higher education system is not keeping up with the changing economy. Projections suggest that the state's economy will continue to need more highly educated workers. In 2025, if current trends persist, 41 percent of jobs will require at least a bachelor's degree and 36 percent will require some college education short of a bachelor's…

  7. Corporatizing Higher Education

    ERIC Educational Resources Information Center

    Lerner, Gerda

    2008-01-01

    The process of changing U.S. higher education institutions along a corporate model has been going on for several decades. It consists of changes, some open, some obscured, on various fronts: the erosion of tenure by attrition; the simultaneous increase in the use of contingent faculty; the rise in tuition; the dramatic decrease in federal and…

  8. Marketing in Higher Education.

    ERIC Educational Resources Information Center

    Hockenberger, Susan J.

    Educational institutions must seek new approaches to institutional planning because of such factors as shrinking traditional college age populations, eroding grants, governmental and judicial incursion, the tightening economic belt, and concern over the relevance of education to modern day needs. The concept of marketing higher education is…

  9. Liberty and Higher Education.

    ERIC Educational Resources Information Center

    Thompson, Dennis F.

    1989-01-01

    John Stuart Mill's principle of liberty is discussed with the view that it needs to be revised to guide moral judgments in higher education. Three key elements need to be modified: the action that is constrained; the constraint on the action; and the agent whose action is constrained. (MLW)

  10. Higher Education Staff.

    ERIC Educational Resources Information Center

    Clery, Sue; Lee, John

    1999-01-01

    This report reviews changes in higher education staff by occupation between 1993 and 1997. Specific attention is paid to staffing patterns in states with right to work laws compared to those without it. When a state enacts a right to work law, it can be assumed it is not supportive of public unions. This analysis is based on data from the National…

  11. Curriculum in Higher Education.

    ERIC Educational Resources Information Center

    Rothman, A. I., Ed.

    1981-01-01

    Four articles on higher education curriculum are presented. In "The Articulate Curriculum" an approach to curriculum description is presented that is designed to have minimal ambiguity concerning the intention, content, and processes of the curriculum and that will lead to questioning several discrete factors in the curriculum planning process. It…

  12. Networks for Higher Education.

    ERIC Educational Resources Information Center

    Interuniversity Communications Council (EDUCOM), Princeton, NJ.

    EDUCOM, the Inter University Communications Council, Inc., planned its 1972 spring conference as a forum for presentations, discussions, and informal meetings to review the present state and the future possibilities of computer networks for higher education. Speeches presented were specifically related to: (1) the current status and future plans…

  13. Evaluation in Higher Education

    ERIC Educational Resources Information Center

    Bognar, Branko; Bungic, Maja

    2014-01-01

    One of the means of transforming classroom experience is by conducting action research with students. This paper reports about the action research with university students. It has been carried out within a semester of the course "Methods of Upbringing". Its goal has been to improve evaluation of higher education teaching. Different forms…

  14. Marketing in Higher Education.

    ERIC Educational Resources Information Center

    Dalili, Farid

    The use of marketing activities by educational institutions and the transfer of marketing activities from business to higher education are considered. Market analysis helps colleges and universities determine what programs, scheduling, or services are strong and to which student market the institution should appeal. It is suggested that the…

  15. Understanding Higher Education Costs

    ERIC Educational Resources Information Center

    Middaugh, Michael F.

    2005-01-01

    Public discussion of higher education costs frequently confuses price with expenditure. This article examines factors associated with increases in the sticker price of a college education and the expenditures incurred by institutions in delivering that education. The discussion suggests that while growth in college tuition is real, access to…

  16. Higher Education Exchange, 2013

    ERIC Educational Resources Information Center

    Brown, David W., Ed.; Witte, Deborah, Ed.

    2013-01-01

    The Kettering Foundation's research has been focused on putting the public back into the public's business for more than thirty years. Some questions that have recently been useful to Kettering researchers as the foundation focuses on its work with institutional actors--especially higher education and its relationship with the public--have…

  17. Women in Higher Education.

    ERIC Educational Resources Information Center

    Pifer, Alan

    Women have traditionally been discriminated against in higher education in both the attainment of degrees and in employment after earning degrees. It has been felt that women are not as capable, reliable, or effective as men in administrative and classroom situations. Statistics show that even at the present time women are underemployed and…

  18. Benchmarking for Higher Education.

    ERIC Educational Resources Information Center

    Jackson, Norman, Ed.; Lund, Helen, Ed.

    The chapters in this collection explore the concept of benchmarking as it is being used and developed in higher education (HE). Case studies and reviews show how universities in the United Kingdom are using benchmarking to aid in self-regulation and self-improvement. The chapters are: (1) "Introduction to Benchmarking" (Norman Jackson and Helen…

  19. Online Higher Education Commodity

    ERIC Educational Resources Information Center

    Chau, Paule

    2010-01-01

    This article analyzes the current trend towards online education. It examines some of the reasons for the trend and the ramifications it may have on students, faculty and institutions of higher learning. The success and profitability of online programs and institutions such as the University of Phoenix has helped to make the move towards online…

  20. Women in Higher Education.

    ERIC Educational Resources Information Center

    O'Donnell, Sheryl, Ed.; Shaver, Barbara, Ed.

    1981-01-01

    Articles on women's studies and females in higher education are presented in this publication. A University of North Dakota project that sought to promote the integration of new research and scholarship results into the curriculum is described in "Women's Equity Committee Offers a Model Project," (Leola Furman, Robert Young). Historical…

  1. Creativity in Higher Education

    ERIC Educational Resources Information Center

    Gaspar, Drazena; Mabic, Mirela

    2015-01-01

    The paper presents results of research related to perception of creativity in higher education made by the authors at the University of Mostar from Bosnia and Herzegovina. This research was based on a survey conducted among teachers and students at the University. The authors developed two types of questionnaires, one for teachers and the other…

  2. Black at Higher Education

    ERIC Educational Resources Information Center

    Kadi-Hanifi, Karima

    2013-01-01

    This is an exploratory paper, drawing on the author's experiences as well as those of three other black lecturers in Higher Education (HE). Three interviews were carried out, asking the same five questions around themes of concern to the author. These are about the learning and teaching approaches used by these lecturers; their experiences of…

  3. Higher Education Exchange 1995.

    ERIC Educational Resources Information Center

    Brown, David W., Ed.

    Nine articles discuss the relationship between the higher education community and the public. The articles are: (1) "On a Certain Blindness in Teaching" by Michael S. Roth, who stresses the necessity of political citizenship education for a healthy democracy; (2) "Monocultural Perspectives and Campus Diversity" by Jane Fried, who explores the…

  4. Unraveling Higher Education's Costs.

    ERIC Educational Resources Information Center

    Gordon, Gus; Charles, Maria

    1998-01-01

    The activity-based costing (ABC) method of analyzing institutional costs in higher education involves four procedures: determining the various discrete activities of the organization; calculating the cost of each; determining the cost drivers; tracing cost to the cost objective or consumer of each activity. Few American institutions have used the…

  5. NEXUS: Digitizing Higher Education.

    ERIC Educational Resources Information Center

    Kirk, Camille

    2000-01-01

    Discussion of digital technology in the context of higher education planning considers how these technologies change teaching; the digital divide; the costs of information technology; hard wiring the campus; material consequences of information technology; digitally enabled crimes and misdemeanors; and libraries and scholarly publishing. Concludes…

  6. Valuing Higher Education

    ERIC Educational Resources Information Center

    Pillay, Gerald J.

    2009-01-01

    The question of the value of higher education is today set in the context of an unprecedented banking and financial crisis. In this context of fundamental change and financial realignment, it is important that we as members of the university remake our case for why the university deserves to be considered alongside all those other worthy causes…

  7. Developing Higher Level Thinking

    ERIC Educational Resources Information Center

    Limbach, Barbara; Waugh, Wendy

    2010-01-01

    This paper identifies an interdisciplinary, five-step process, built upon existing theory and best practices in cognitive development, effective learning environments, and outcomes-based assessment. The "Process for the Development of Higher Level Thinking Skills" provides teachers with an easy to implement method of moving toward a more…

  8. Free Higher Education

    ERIC Educational Resources Information Center

    Reed, Jr., Adolph; Szymanski, Sharon

    2004-01-01

    The crisis of affordability in higher education is intensifying. Illustrations of its resonance abound: from the frequent news articles describing and amplifying the crisis and its sources to legislators' and candidates' proposed responses. Republicans' responses tend to be mainly punitive toward institutions; Democrats' proposals are more…

  9. Shell Higher Olefins Process.

    ERIC Educational Resources Information Center

    Lutz, E. F.

    1986-01-01

    Shows how olefin isomerization and the exotic olefin metathesis reaction can be harnessed in industrial processes. Indicates that the Shell Higher Olefins Process makes use of organometallic catalysts to manufacture alpha-olefins and internal carbon-11 through carbon-14 alkenes in a flexible fashion that can be adjusted to market needs. (JN)

  10. Comparative Higher Education.

    ERIC Educational Resources Information Center

    Altbach, Philip G.

    The comparative higher education course offered at the State University of New York at Buffalo is briefly described, and a course schedule is presented, including required and recommended readings for each topic. The course is intended to provide a broad cross-cultural perspective and considers the growth and development of universities in Europe,…

  11. Higher-Order Laguerre-Gauss Mode Generation and Interferometry for Gravitational Wave Detectors

    NASA Astrophysics Data System (ADS)

    Granata, M.; Buy, C.; Ward, R.; Barsuglia, M.

    2010-12-01

    We report on the first experimental demonstration of higher-order Laguerre-Gauss (LGpℓ) mode generation and interferometry using a method scalable to the requirements of gravitational wave (GW) detection. GW detectors which use higher-order LGpℓ modes will be less susceptible to mirror thermal noise, which is expected to limit the sensitivity of all currently planned terrestrial detectors. We used a diffractive optic and a mode-cleaner cavity to convert a fundamental LG00 Gaussian beam into an LG33 mode with a purity of 98%. The ratio between the power of the LG00 mode of our laser and the power of the LG33 transmitted by the cavity was 36%. By measuring the transmission of our setup using the LG00, we inferred that the conversion efficiency specific to the LG33 mode was 49%. We illuminated a Michelson interferometer with the LG33 beam and achieved a visibility of 97%.

  12. ID in Higher Education: A Paradox.

    ERIC Educational Resources Information Center

    Terrell, William R.; Shrock, Sharon A.

    This chapter examines, within the higher education context, the difficulties which instructional developers often encounter in gaining cooperation to achieve their goals. It is argued that instructional development in the university involves a paradox in that a great deal of money is provided for the improvement of instruction, but an environment…

  13. Higher Education for Learning Disabled Students.

    ERIC Educational Resources Information Center

    Lopez, Mike; Clyde-Snyder, Myrtle

    1983-01-01

    Describes the operation of Project HELDS (Higher Education for Learning Disabled Students) on one campus. Evaluation results showed the use of existing university resources such as tutoring and taping books and lectures had a meaningful impact on the academic achievement of the 27 participants. (JAC)

  14. Investigating Classroom Community in Higher Education

    ERIC Educational Resources Information Center

    Summers, Jessica J.; Svinicki, Marilla D.

    2007-01-01

    The purpose of this research was to demonstrate an empirical relationship between classroom community and students' achievement goals in higher education, and to offer a possible explanation for differences in this relationship for cooperative and non-cooperative classrooms. Structural equation modeling techniques revealed that students'…

  15. Staff Development Needs in Pakistan Higher Education

    ERIC Educational Resources Information Center

    Ullah, Muhammad Hameed; Khan, Muhammad Naeem Ullah; Murtaza, Ali; Ud Din, Muhammad Naseer

    2011-01-01

    Staff development is very significant for the achievement of overall goals of higher education in Pakistan. The success of innovations depends largely upon the skills of instructors; but in Pakistan, the people with a simple masters degree (without any pedagogical training) are inducted as teaching staff at the university level, so it is time to…

  16. Maryland Higher Education Commission Data Book, 2001.

    ERIC Educational Resources Information Center

    Maryland State Higher Education Commission, Annapolis.

    This document provides statistics in summary form about higher education in Maryland. The first table compares Maryland data to national averages for educational achievement, enrollment, campus mix in enrollments, degrees conferred, average resident undergraduate tuition and fees, state funding, and average faculty salaries. Other tables, grouped…

  17. Student Engagement in South African Higher Education

    ERIC Educational Resources Information Center

    Wawrzynski, Matthew R.; Heck, Ashleigh M.; Remley, Christopher T.

    2012-01-01

    The relationship between student engagement and student outcome achievement is well documented in the higher education literature for US students and has recently gained traction for students in other countries such as Australia, New Zealand, Malaysia, and England. Yet, few studies have examined this relationship in countries with evolving or…

  18. Redefining Tradition: Adult Learners and Higher Education

    ERIC Educational Resources Information Center

    Ritt, Elizabeth

    2008-01-01

    For many, achieving a college degree is a lifelong dream, characterized by opportunity, hope for a bright future, long-term career options, and an overall improved quality of life. Yet, access to American higher education continues to be limited by complex structures and systems such as financial barriers, expectation gaps in learning between high…

  19. Strategic Enrollment Management: Transforming Higher Education

    ERIC Educational Resources Information Center

    Bontrager, Bob; Ingersoll, Doris; Ingersoll, Ronald

    2012-01-01

    As external forces demand change in the delivery of postsecondary education and institutions seek to take advantage of new opportunities, the potential for achieving higher levels of student and institutional success is vast. New technologies, communication tools, data use, and organizational constructs present key factors in improving the…

  20. Women in Higher Education: Empowering Change.

    ERIC Educational Resources Information Center

    DiGeorgio-Lutz, JoAnn, Ed.

    The essays in this collection discuss the position of women in higher education, noting the progress that women have made in recent years in the quest to achieve gender equality and the challenges women still face in study and academic careers. The chapters are: (1) "Expanding the Academic Knowledge Base: Helping Students To Cross Gender's Great…